9 Crochet Phone Case Patterns to Use Up Scrap Yarn

If you are anything like most crafters, you have a basket, a bin, or an entire shelf dedicated to yarn scraps. Those leftover bits from bigger projects are too precious to throw away but too small to start something new. The good news is that your phone case is basically the perfect solution to that problem. Phone cases are small, quick to work up, and they look absolutely adorable in scrappy, colorful combinations. Whether you have a single skein leftover or a whole rainbow of odds and ends, there is a pattern on this list for you.

Crocheting your own phone case also gives you something that no store-bought case ever will: a completely one-of-a-kind accessory that fits your style, protects your phone, and puts your leftover yarn to good use at the same time. These patterns range from beginner-friendly to intermediate, and most of them can be finished in an evening or a weekend afternoon. Let’s get into all nine of them.

Why Crochet Phone Cases Are Perfect for Scrap Yarn

Before we dive into the patterns themselves, it is worth talking about why phone cases and scrap yarn are such a natural pairing.

The average crochet phone case uses somewhere between 20 and 60 yards of yarn depending on the size of your phone and the weight of your yarn. That means a single leftover ball that has been sitting in your stash for two years is probably more than enough to make one. When a pattern calls for multiple colors, you have the perfect excuse to raid every corner of your yarn stash and mix things together in ways you never would have thought to try with a full project.

Phone cases are also forgiving. Because you are creating a snug-fitting sleeve rather than a garment that needs to drape or fit a human body, small gauge variations matter very little. You can swatch for a row or two, check the fit against your phone, and adjust from there. No blocking required, no seaming headaches, and no frogging an entire sweater because the gauge was off by half a stitch.

The finished object is also something you will actually use every single day, which makes it feel more rewarding than a dishcloth or a swatch that just sits in a drawer.

Tips Before You Start

A few general pointers will help you get better results with any of these patterns.

Use a tighter gauge than you might think is necessary. You want the case to hold its shape and protect your phone, not stretch out the moment you put it in your pocket. Going down a hook size or two from what the yarn label recommends is usually a smart move.

Measure your phone before you start. Even within the same brand, phone dimensions vary significantly from model to model, and a case that fits a standard iPhone will not fit a Plus or Pro Max model. Jot down the height, width, and depth of your phone so you can adjust as you go.

Consider your yarn fiber. Cotton and acrylic are ideal for phone cases because they hold their shape well and do not felt or stretch unpredictably. Wool can work beautifully too, especially if you want a slightly cushioned feel. Avoid very stretchy yarns like those with a high elastane or nylon content unless the pattern specifically calls for them.

Lastly, weave in your ends as you go. With colorful scrap yarn projects, you can end up with a lot of ends, and dealing with them at the finish line is much less fun than handling them as each color section is completed.

1. The Classic Ribbed Sleeve

A ribbed phone case is one of the most popular beginner patterns for a reason. It is structured, stretchy enough to fit over your phone snugly, and works beautifully in a single color or in stripes if you want to use up multiple scraps at once.

To make a basic ribbed sleeve, you work rows of front post and back post double crochets, which create that classic raised rib texture. The pattern is worked flat and then seamed up the side, leaving an opening at the top. You can add a simple button closure or a short flap to keep your phone secure if you like, or leave it open for easy access.

This is an excellent choice if you have a good chunk of one color left over from a previous project. Worked in a fingering or DK weight yarn with a smaller hook, it looks polished and almost store-bought. If you want to use multiple scraps, try alternating two or three colors every few rows to create a striped effect that makes the ribbing even more interesting visually.

The ribbed sleeve is also very easy to resize. Simply add or subtract rows to adjust the height and work more or fewer stitches across to adjust the width. It is genuinely one of the most practical patterns on this list.

2. The Granny Square Phone Pouch

If you have very small scraps, this is the pattern to reach for. A granny square phone pouch is made by working two small granny squares and joining them together on three sides, leaving the top open. You can add a button and loop closure, a drawstring, or a short flap depending on your preference.

The beauty of this design is that each round of the granny square can be a completely different color. You could use up a dozen different scraps in one project, and the result will look intentional and charming rather than random. Granny squares are so cheerful that almost any combination of colors works, especially when they are outlined in a single neutral shade like cream, black, or gray.

If your phone is larger, simply work the granny squares to a bigger size by adding more rounds. If you want something with more structure, join a third or fourth square to create a flap that folds over the top. You can even add a short strap or loop so the case doubles as a wristlet.

This pattern is ideal for yarn scraps in worsted or bulky weight. Finer yarns will require more rounds to reach the right size but can create a more delicate finished look.

3. The Tapestry Crochet Geometric Case

Tapestry crochet is a technique where you work with two colors simultaneously, carrying the unused color along the back of your work while crocheting over it. The result is a thick, sturdy fabric with bold geometric designs on the front.

For a phone case, tapestry crochet produces something that feels almost like a woven textile. You can create diamonds, stripes, zigzags, checkerboards, and all kinds of geometric shapes just by following a simple color chart. Because you are always working with exactly two colors at a time, this is a great opportunity to pair two complementary scraps together.

This pattern is slightly more advanced than the previous two because it requires you to follow a chart and maintain even tension with two strands at once. But the learning curve is not steep, and once you get the rhythm, it moves along quickly. The finished fabric is dense enough that it provides real protection for your phone, not just decoration.

Tapestry crochet works best with smooth, non-fuzzy yarns so that the pattern stitches are clearly visible. Cotton and acrylic are perfect. Aim for two scraps that contrast well against each other for maximum visual impact.

4. The Boho Fringe Pouch

For those who love a more eclectic, bohemian look, the fringe pouch is an incredibly fun project. The base of this case is a simple single crochet rectangle worked in the round, which is quick and mindless. The magic happens when you add the decorative elements.

Fringe is the obvious choice, cut from your scraps and looped along the bottom edge of the case. You can mix yarn textures, colors, and lengths for a wild, layered fringe effect that looks like something you would pay a lot of money for at a boho boutique. Tassel accents, pom-poms made from leftover yarn, and even small crochet flowers are all easy additions that turn a simple pouch into a statement piece.

This is a wonderful pattern specifically because the decorative elements are where the scraps shine. The body of the case can be made from a single, slightly larger leftover ball, and all of the fringe and trims can come from your tiniest bits and pieces. Even two or three yards of a beautiful, specialty yarn is enough to create a fringe strand or a small accent.

If you have been holding onto scraps of novelty yarn, this is the moment to use them. A little bit of sparkly or fuzzy yarn woven into the fringe looks absolutely gorgeous and uses up something that might otherwise never see the light of day.

5. The Simple Striped Slip Case

Stripes are one of the easiest and most satisfying ways to use up multiple scraps of yarn in a single project. A striped slip case for your phone is worked in rows of single or half double crochet, switching colors as often as you like to create bold, graphic stripes across the case.

The width of your stripes is entirely up to you. Wide stripes in two or three colors give a classic, retro feel. Narrow, irregular stripes in many colors create something that looks like a color study or a mini modern art piece. You could even arrange your scraps from lightest to darkest for an ombre-style gradient effect.

Because you are crocheting flat and seaming the sides, you have great control over where each stripe lands. You can plan your color order ahead of time by winding small amounts of each yarn around a piece of cardboard to see how they look together, then work them in that sequence.

The only consideration with heavy striping is managing all of your ends. Cut each color as you go rather than carrying it up the side, and weave your ends into the back of the matching color section so they disappear completely.

6. The Mandala-Inspired Round Pouch

Working in the round from a magic ring, a mandala-inspired phone pouch is a small circular or oval pocket that cradles your phone in a cozy, organic shape. This style is particularly popular for smaller phones and looks stunning in five or six contrasting colors worked in rounds.

The pattern begins just like a traditional crochet mandala, with increases in each round to keep the fabric flat. Once the circle is large enough to cover one face of your phone, you stop increasing and begin working straight up to form the sides of the pouch. A simple seam or zipper at the top closes the case.

This is one of the most visually striking options on the list because the concentric circles of color on the front face of the case look genuinely beautiful. If you have always wanted to make a crochet mandala but felt like a full one was too large a commitment, this is a wonderful way to try the technique on a small, manageable scale.

Fingering or sport weight yarn works especially well for this design because finer yarn allows you to get more rounds in before the flat section needs to stop increasing, which means more opportunity to play with color.

7. The Crochet Wallet Phone Case

If you want your scrap yarn project to be genuinely functional beyond just protecting your phone, the wallet phone case is the answer. This design adds a small pocket or two on the front or back of the case for cards, cash, or a key, making it possible to leave your bulky wallet at home.

The construction involves working two flat panels: one for the main phone pocket and one for the card pocket. These are joined around the edges with a seam or a row of slip stitches. A magnetic snap or a button loop closure keeps everything secure.

Because this case has more fabric to cover, it uses slightly more yarn than a simple sleeve, but it is still very much within the range of a scrap project. You could make the main panel in one color and the card pocket in another for a stylish two-tone effect. Or use a striped approach for the body and a solid for the pocket panel so that the pocket stands out as a design feature.

This pattern tends to skew slightly more intermediate because of the multiple components, but each piece on its own is simple. Think of it as three easy components that you join together rather than one complicated project.

8. The Cabled Phone Cozy

If you want to push your skills a little and create something that looks genuinely impressive, a cabled phone cozy is the way to go. Cables in crochet are created using front post stitches that cross over each other to create a twisted, rope-like texture. The result looks exactly like a knitted cable and is one of the most satisfying textures you can create with a hook.

For a phone case, a simple two-stitch or four-stitch cable running down the center of the case is enough to make a big visual impact. You work the case flat with the cable panel in the center and then seam the sides. Because cables draw in the fabric, you will want to work a few extra stitches on either side of the cable to keep the overall width correct.

This pattern is a beautiful showcase for a single leftover skein of a heavier yarn, like a chunky or bulky weight in a beautiful heathered or tweed blend. The cable texture makes simple, solid yarn look rich and complex. If you have been saving one particularly lovely skein for the right project, this might be it.

9. The Colorblock Envelope Clutch Case

The final pattern on this list is a bit more of a showstopper. The colorblock envelope clutch is a slightly larger pouch with a triangular or rectangular flap that folds over the front of the case and secures with a button. It is designed to be held in your hand or tucked under your arm like a tiny clutch purse rather than slipped into a pocket.

The colorblock approach means working each section of the case in a boldly contrasting color. The body of the case might be navy, the flap might be a burnt orange, and the button might be wrapped in cream yarn for a final touch. This design rewards confident color choices and strong contrasts.

Because it is a bit larger and more structured than a standard phone case, you will want to work this one in a cotton or tightly spun acrylic that holds its shape well. A flap that flops is not very functional. A fold-over flap worked in rows of single crochet with a tight gauge will stay crisp and neat.

This is also an excellent option if you are making a gift. A handmade envelope clutch phone case in someone’s favorite colors looks thoughtful, sophisticated, and genuinely useful.

Finishing Touches That Make All the Difference

No matter which pattern you choose, a few finishing touches will elevate your phone case from a craft project to something polished and giftable.

Blocking your finished case briefly, even if it is acrylic, can even out your stitches and help it lay flat. A little bit of steam or a quick soak and press goes a long way. If you are using cotton, blocking makes a very noticeable difference in how refined the finished piece looks.

Choosing the right closure matters too. Buttons are classic and come in beautiful materials like wood, shell, and metal that can complement your yarn colors. Toggle clasps give a more rustic, artisan feel. Magnetic snaps are the most practical if you want one-handed opening and closing.

If your case has seams, press them open and weave in any remaining ends securely. A loose end that works its way out of a phone case will unravel the whole thing over time, so take the extra ten minutes to secure everything properly.

Making These Patterns Your Own

One of the greatest joys of working from scrap yarn is that you are freed from the pressure of buying the exact right color. You work with what you have, and the constraints themselves become the creative engine. Some of the most beautiful handmade pieces come from color combinations that would never have been planned intentionally.

Try not to overthink the color arrangement. Lay your scraps out next to each other and trust your eye. If two colors look good together on the table, they will look good in the finished case. If something feels off, swap it out.

You can also mix yarn weights to interesting effect, especially in a patchwork or granny square style case. A single square worked in a thicker yarn next to one worked in a thinner yarn will look intentionally textural rather than mismatched.

Most of all, enjoy the process. These are small, fast projects, which means you get the full satisfaction of a finished object without weeks of commitment. If one color combination doesn’t turn out the way you hoped, you have only spent an evening on it, and you now have a much better idea of what to do differently next time.

Your scrap basket is full of potential. Any one of these nine patterns is a great place to start putting it to use.