If you need a way to make the 100th day of school memorable for your students, you can try these 100th Day of School T-shirt craft ideas. This is something that your students will do for themselves with your guidance. This is a fun way to make a keepsake that represents the theme of this milestone, reaching the 100th day of school.

I put together some ideas for you to give your students options of T-shirt designs that they can create. They will have to gather one hundred of the items that they choose to decorate their jersey with. These items can be adhesive gemstones, mini pompom balls, adhesive eyeballs, stick-on hearts, and sticky-back foam shapes. Popular phrases for the t-shirts that students can write on for themselves are ‘100 Days Brighter’, ‘My first 100 days were Sweet’, ‘My first 100 days were Out of This World’, 100 Days of Loving School’, and ‘100 days Smarter’.

I love to find awesome classroom craft projects. As an Amazon affiliate, I may earn a commission for purchases using my links. The ideas and paid links below are based on Amazon finds that are great for making 100th day of school T-shirt crafts.

100th Day of School T-Shirt Craft Ideas for Kids

These 100th Day of School T-Shirt Craft Ideas have one hundred of different types of craft items glued to jerseys. Examples of these items are mini pompom balls to represent gumballs, googley eyes, adhesive foam shapes (hearts and butterflies), iron on patches, and adhesive gemstones.

See examples of each of these 100th Day of School T-Shirt Craft Ideas below:

Use Iron-on letters on T-shirts: The first T-shirt has iron-on letters that say ‘100 Colorful Days of Kinder.’ The second t-shirt used black iron-on letters to say ‘100 Days smarter.’ A craft adhesive glue was used to stick on 100 little axolotls to the shirt. The third shirt is a 100 Days Sweeter t-shirt DIY with iron on letters. The last shirt says ‘I Survived 100 Days of School’ with vinyl iron-on letters and pencil bandaids, yes bandaids!

100 Days Gumball jersey designs: Glue on some mini pompom balls on the T-shirts to make gumballs or paint them on with fabric paint. Use markers to write the words ‘My first 100 days were sweet’.

100 Days Googley Eyes T Shirt idea: Putting googley eyes on a black T shirt really makes the eyes stand out. The message used is ‘Eye made it to 100 Days’.

100 Days Shirt with eyeball monster aliens: Seeing lots of eyeballs can be creepy but I guess that’s the point. I love the line ‘My first 100 days were out of this world’.

100 Days of Loving School – Hearts on a T-Shirt: If for you, 100 Days of school is around Valentines, you can add a love theme to it. Celebrate 100 days of LOVING school with stick-on hearts on a T-shirt.

100 Days Brighter Gemstones on T-Shirts: Each student brings a plain T-Shirt to school and uses markers and sticky gemstones to decorate it. This is a cute way to use the popular term ‘100 Days Brighter’. Each T-Shirt gets 100 gemstones on it. These gemstones have a strong adhesive on the back and they stick on to fabric really well.

100 Days Flew By – Butterflies on a Shirt: I love this idea! Foam butterflies, one hundred of them, are stuck on this shirt. The owner was able to reuse the shirt for regular use because the butterflies did not need to be hot glued on. They were self-adhesive with enough stick to hold on to cloth. I would however use a white T-shirt, instead of this dark color, so that the colors of the words ‘100 Days Flew By’ can be clearly seen. The dress has iron on butterflies.

100 Days of Making the Whole School Shimmer T-Shirt: Look at the detail on this 100 days T-Shirt. It is covered in 100 gems and glittery letters are used to make the words.

100 Days of School T shirt crafts with buttons: Colorful assortments of 100 buttons can be used to decorate a 100 days shirt. The buttons can be arranged to form flowers with the added slogan of ‘100 Days Blooming’. Buttons are also great for making a Pete the Cat shirt with the words ‘Grooving My Way to the 100th Day’.

100 Days of blooming T-shirt craft with 3D flowers: This shirt has both small flowers and tiny flowers to make all one hundred pieces for in the T-shirt. You would have to snip off the back of each flower before gluing with a glue gun.

100 Days T Shirt Craft for boys: This idea has a monster truck theme that boys would like. The words printed can be ‘I Crushed 100 Days’. One hundred of these green bottons make up the terrain under the truck. I found iron-on letters and an iron-on truck that you can use.

I Crawled My Way Through 100 days of school shirt: A long and winding caterpillar was made on this shirt with 100 mini pompoms.

Make a 100 on a T-shirt filled with 100 mini pompoms: Trace out the number 100 in a fat font style that allows each digit to be filled with 100 colorful buttons, gems, or pompoms.

I Sparkled Through 100 Days: This 100th Day shirt project is easy to make with these adhesive gems.

Themed 100th Day T Shirt Ideas

Bug theme 100th Day T Shirt: These are iron on letters for making a bug themed shirt that says ‘100 Days of bugging Miss’. The letters look like little grubs with eyeballs.

Space themed 100th Day DIY shirt for craft project: The stars and space elements on the white shirt can be ironed on, but the person who made this design used E6000 glue to stick stars on. She used a Cricut Easy Press 12×10 at 315° for 30 seconds to stick the larger patches. The black shirt has a siple design using colorful iron-on stars and a glued-on rocket patch. Some of the stars were arranged to create the number 100.

Heart Themed 100 days shirt crafts: If your 100th Day of school falls on Valentine’s Day this year, or close to that date, your shirt can be filled with iron-on 100 hearts. That is 100 days of loving school.

Flower themed 100th Day Shirt craft: This jacket has 100 iron on hearts and flowers.

Pirate themed 100th Day of school shirt idea: This 100 Days shirt days 100 Days I Treasure. This set of fabric markers were used on it along with gems.

Ice-cream themed 100th Day of School T-Shirt with mini pompoms: This is a 100 Days of School Tshirt for Kids with mini pompoms for kids to add on ice-cream. The printed letters say ‘100 Sweet Days of School.’

100th Day of School t-Shirt Craft Tip

I’ll leave you with a tip for buying 100 items for the T-Shirts. Whether you are getting adhesive gemstones, stickers, iron on patches, or mini pompom balls, always buy a pack that has more than 100 in them.

Many times, a retailer would claim that a pack has 100 hundred items when it is actually less than that. So to be safe, buy two packs instead, or a bigger sized pack.

I love these tiny iron on hearts, but the pack comes with 62 pieces, so I’d recommend getting two packs for one T shirt. Each heart is about the size of a thumbprint.

I hope this has helped you find fun 100th Day of School T-Shirt Craft Ideas for your students.

I’ll leave you with clickable pictures of more 100th Day T Shirts ideas below.

You can also dress up with other types of clothing and accessories for 100th day. This pink cowboy hat is covered with 100 gems.

Here are more 100th Day of School blog posts that you can check out:

100th Day of School Crafts for Kids

100th Day of School Classroom Decor Ideas

100th Day of School Picture Books for Kids