Cinnamon soap rush

Sprinkle cinnamon on a plate of water so it floats like a dusty film. Touch a tiny drop of dish soap to the center — the cinnamon races to the edges. Fast payoff, easy redo.

1. 1

   Thin water layer

   Pour a thin layer of water on the white plate.

2. 2

   Dust the surface

   Sprinkle cinnamon evenly so it floats on top.

3. 3

   Soap touch

   Dip a swab in dish soap; touch the center once — cinnamon rushes outward.

4. 4

   Optional redo

   Dump, rinse, and try again for a second whoosh.

Cinnamon on a white plate + a drop of soap — worked well. A little short, but he liked it. Good quick wow; plan a second activity for a longer block.

Try pepper instead of cinnamon. Pair with a longer follow-up if you need more than ~10 minutes.