These are a fun alternative to water balloons and they are super easy to make. I found this great idea while watching "Martha On Demand." All you need to make one is 3 sponges. I picked three different colors to make them more fun and appealing to kids.
Cut each sponge into 3 strips.
Stack sponges alternating each color.
Take twine or floss and wrap around center pulling tight. Tie a strong knot.
Trim strings and have fun!