Watch pure delight unfold as a real bouncy ball takes shape before your eyes. This single Create Your Own Bouncy Ball kit from Dan and Darci packs a genuinely satisfying science moment into a little canister: combine the two bags of bright color powder, pour them into the mold, soak it in water, and out pops a bouncy ball your child made from scratch.

Mix the colors for marbled, one of a kind patterns, then let the ball dry and put it straight to work. It is an easy win for party favors, rainy afternoons, prize boxes and gift baskets, and at pocket-money price it is simple to grab a few so everyone gets to pour, soak and play.