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Eyeball Surprise Science Activity to put the STEAM in Halloween

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal. #halloween #halloweenparty

Here’s a fun kids Halloween party game or Halloween kids activity that doubles as a cool science lesson: Freeze glow-in-the-dark bouncy ball eyeballs in baking soda and water, and then have kids spoon vinegar on top to reveal the eyeball surprise! It’s a fun Halloween party game and great way to put the STEAM into Halloween!

See also: Skeleton free printable Halloween party decorations >

Vinegar + Baking Soda + Spoon = Eyeball Surprise!

Vinegar and baking soda is a classic fizzy science experiment. Kids love seeing the bubbles as the vinegar hits the baking soda to uncover a creepy hidden eyeball (which doubles as a bouncy ball).

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal.

A classic party game that kids love to play

Remember my Rescue Han Solo from carbonite kids game that we played at Elise’s Episode 6: Return of the Birthday party? My easy Halloween eyeball surprise game is a riff off of the Han Solo game that was a HUGE hit!

Star Wars birthday party game: vinegar and baking soda Free Han Solo from Carbonite kids party game

A fun eyeball surprise game for Halloween

This time instead of Star Wars minifigures, I hid these glow-in-the-dark bouncy ball eyeballs and encased them in baking soda using this baby food freezer tray. Halloween party guests start off with a small bowl of vinegar with a spoon, and a mysterious white ball on their plate. Ooh …what’s inside?!?!?

Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal. Fun and easy kids Halloween party game!

It’s a super fun and easy kids Halloween party game that brings the smiles.

Halloween monkey costume

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DIY crafts tutorial

Supplies for making my fun kids Halloween STEAM science activity and Halloween party game:

How to make a fun kids Halloween party game: Eyeballs surprise science experiment

Step 1: Make the frozen eyeballs

We used the same recipe from my free Han Solo from carbonite game that we played at Elise’s Star Wars birthday party. This recipe is easy enough that kids can do it on their own. You’ll need a big ol’ box of baking soda and a larger size ice cube tray – I like this baby food freezer tray that I still use now that my kids are older to make purees for this sweet potato crackers recipe and other recipes.

Stir 3 parts baking soda with 1 part water in a bowl. Pour a small amount of the mixture into each well of the ice cube tray. Place Glow-in-the-dark bouncy ball eyeballs or Neon bouncy ball eyeballs into the baby food freezer tray. Then cover the eyeballs with more baking soda mixture.

Place the baby food freezer tray into the freezer for a couple of hours. Store in the freezer until party time.

Making baking soda + vinegar ice cubes for a science-inspired Star Wars birthday party game

Step 2: Pour vinegar onto the frozen baking soda eyeballs

Don’t tell party guests what’s inside the mysterious white blob. Give each party guest their own plate, bowl of vinegar, and a spoon and uncover the secret mystery!

Playing kids Halloween games: eyeball surprise

Step 3: Play with creepy bouncy eyeballs

Rinse off the bouncy eyeballs and then use them for your next kids Halloween party game. Kids can take them home as Halloween party favors.

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal.
DIY crafts tutorial

Be sure to pin my Halloween science activity – it’s a fun kids Halloween party game!

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal. #halloween #halloweenparty

And check out more Halloween craft and DIY projects like these kid-friendly Halloween pumpkin and skull felt bracelets and DIY Halloween costumes ideas.

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