Mix equal parts of cornstarch and water to form "goo". This has a delightful slippery texture, and is fun for children to play in. Pour the mixture out on the table or into a jelly roll pan or cookie sheet. Children like to feel it ooze through their fingers. It is a soothing activity. It looks messy, but once dried can be easily vacuumed up, even out of fabric and carpet!

Store in covered container to be reused. It can be "revitalized" by mixing it and adding enough water to recreate the right consistency.

NOTE: Not for human consumption!