Homemade bouncy ball. Fun kids experiment WhizKidScience
WhizKidScience is an excellent source for fun science experiments. Did this one a few months ago for a birthday party of 10. Kept everyone busy for a good hour. Can get a little messy but easy to clean.
You will need:
Borax
warm water
Food Coloring (optional)
school glue
Glitter
Corn Starch
Bouncy Bouncy