DIY Glow-in-the-Dark Bouncy Balls: Easy Slime Craft for Kids!

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March 28, 2025

Remember those classic bouncy balls you’d get from a gumball machine? The ones that defied gravity and bounced higher than you could imagine? Well, get ready to dial up the fun, because today we’re making our very own slime-infused bouncy balls that not only bounce and stretch, but also GLOW in the dark! This is such a simple and exciting project that the whole family will love, and it’s perfect for a rainy day or a fun party activity.

Why You’ll Love Slime-Infused Bouncy Balls That Glow & Stretch

Fast: You can whip these up in no time!
Easy: Super straightforward steps, even for beginners.
Giftable: Package them up for fun party favors or small gifts.
Crowd-pleasing: Kids and adults alike will be mesmerized by these glowing, stretchy spheres.

Ingredients

Gathering your supplies is half the fun! Here’s what you’ll need to create these magical bouncy balls:

1/2 cup clear school glue: This is your base, and clear glue lets the glow shine through! If you have glow-in-the-dark glue, even better!
1/4 cup liquid starch: This is the magic ingredient that makes it all come together.
1 tablespoon glow-in-the-dark paint or pigment powder: This is what gives your balls that awesome glow!
1/4 cup warm water: Just a little to help everything mix smoothly.
1 tablespoon cornstarch: This helps thicken the mixture.
1/2 teaspoon baking soda: Another little helper for consistency.
Optional: Neon food coloring or glitter: For an extra pop of color and sparkle!

How to Make Slime-Infused Bouncy Balls That Glow & Stretch

Alright, let’s get our hands a little messy and create some bouncy magic! It’s so satisfying to see the transformation happen.

Step 1: Mix the Glue Base

Grab a bowl and pour in your clear school glue. Add the warm water and stir it all together until it’s nice and smooth. This is like the canvas for your glow-in-the-dark masterpiece!
Step 2: Add the Powders

Now, sprinkle in the baking soda and cornstarch. Give it another good stir until they’re completely dissolved. You don’t want any powdery bits left!
Step 3: Bring on the Glow!

Time for the fun stuff! Stir in your glow-in-the-dark paint or pigment powder. If you want even more pizazz, now’s the time to add a few drops of neon food coloring or some shimmery glitter. Mix it all up until the color is vibrant and even.
Step 4: Activate the Slime

This is where the magic really happens! Slowly pour in the liquid starch while you keep stirring. You’ll notice the mixture will start to get thicker and clump together. Keep stirring until it’s all clumpy and starts to pull away from the sides of the bowl.
Step 5: Knead Your Ball

It’s time to get your hands in there! Take the thickened mixture out of the bowl and start kneading it with your hands. It might be a little sticky at first, but keep working it. You want it to become stretchy and firm enough so you can shape it into a ball. I find kneading it for a few minutes really makes a difference in the texture and bounce!
Step 6: Test the Bounce and Stretch

Once it feels right, give your creation a gentle bounce and a good stretch. See how far you can pull it! It’s so satisfying to see it bounce and stretch like a pro.
Step 7: Let it Set

Place your freshly made bouncy ball on some wax paper for a few minutes. This helps it stabilize and firm up a little more, making it even bouncier and easier to play with. You’re almost there!

Substitutions & Additions

Feeling creative? You can totally customize these bouncy balls! If you can’t find glow-in-the-dark paint, a good quality neon pigment powder works just as well. You can also experiment with different colors of food coloring, or even mix in different kinds of glitter for a unique look. Want to explore more fun crafts? You might enjoy our DIY Bioplastic Suncatchers for another creative outlet.

Tips for Success

To make sure your bouncy balls are a smashing success, here are a few pointers:

Don’t add too much liquid starch at once: Add it slowly and stir well. Too much can make it too stiff.
Knead thoroughly: The more you knead, the better the texture and bounce you’ll achieve.
Wash your hands: It’s a good idea to wash your hands before and after to keep things clean.
Prep ahead: You can mix the glue, water, baking soda, and cornstarch a bit in advance if you want to speed up the process when it’s time to add the glow elements.

How to Store Slime-Infused Bouncy Balls That Glow & Stretch

To keep your bouncy balls in tip-top shape, store them in an airtight container or a sealed plastic bag. This will prevent them from drying out. They should last for a good while, as long as they’re stored properly. If they start to feel a little sticky after a while, you can try kneading them again, or even a little extra cornstarch can help revive them!

FAQs

Got questions? We’ve got answers!

Are these bouncy balls safe for young children?

While these are made with non-toxic craft supplies, adult supervision is always recommended, especially for younger children, as the materials are not intended for consumption. Make sure they understand not to eat the bouncy balls.

How long will they glow?

The glow duration depends on the quality of the glow-in-the-dark paint or powder you use and how long you “charge” them under a light source. They usually glow best for a few hours.

Can I make them scented?

You absolutely can! Add a drop or two of essential oil (like lavender for calming or citrus for energy) along with the glow paint for a scented experience.

We hope you have an absolute blast making and playing with these glow-in-the-dark bouncy balls! If you try them out, let us know how they turned out in the comments below. For more fun and creative ideas, be sure to check out our other crafts and recipes! Looking for more family fun? You might enjoy our Best Homemade Playdough Recipe or our DIY Lava Lamp Science Project!

Happy crafting, and don’t forget to follow us on Pinterest for even more creative inspiration!