Craft StationsNo. 5598 · The 2026 edition
Eyeball Surprise Science Activity to put the STEAM in Halloween
Transform your spooky gathering into a hands-on science lesson with this glowing Halloween experiment! Guests will love the thrill of discovering hidden treasures inside frozen blocks.
Our own summary of the original — the full post and photos live at merrimentdesign.com.
This interactive STEAM activity combines chemistry and fun by having guests use vinegar to dissolve baking soda blocks and uncover glow-in-the-dark bouncy eyeballs. It is a perfect way to engage children with science while providing a memorable Halloween party favor.
You'll need
Directions
- In a mixing bowl, combine three measures of baking soda with one measure of water until smooth. Spoon a thin layer of this paste into the individual compartments of your ice cube tray.
- Nestle a glow-in-the-dark bouncy eyeball into each compartment that already contains the baking soda paste.
- Add another layer of the baking soda paste on top of each eyeball to completely hide it.
- Transfer the tray to the freezer and leave it there for several hours. Keep the frozen treats stored in the freezer until your celebration begins.
- Hand out a plate, a small bowl of vinegar, and a spoon to every guest. Instruct them to pour the vinegar over the frozen blocks to reveal the hidden toy.
- Once the reaction is complete, wash the bouncy eyeballs thoroughly. They are ready to be used in future games or given away as party keepsakes.
