Make Your Own Glow in the Dark Sidewalk Chalk using only two ingredients; such a fun way to play after dark! Glow in the dark paint dissolved into water. Then mix plaster of Paris to desired consistency.
Glow sticks in the pool, great for night swimming! Not sure this would be the best idea for a big in ground pool (would probably take a couple hundred sticks), but would definitely be cool in a kid pool or an above ground pool!
Great Bubble DIY for Kids – Make Bubbles that Will Bounce. 1 C distilled drinking water 1 Tablespoon dish soap 1 Teaspoon of glycerin, a straw to blow the bubbles with or a bubble wand, 1 clean glove (or sock) – (this is to keep the bubble from popping)