Sponge Bobs!

This was an inexpensive and quick craft. The kids enjoy playing with them because they don't hurt, but they'll also hold enough water to soak each other. Though I keep calling them spongeballs, somewhere along the way, the kids started calling them SpongeBobs. Whatever.

Step 1: Choose a couple colors of sponges ($1/3 sponges X 4 kids = $4).
Step 2: Cut them lengthwise into thirds.

Step 3: Stack the sponge strips into piles 3 wide by 3 tall.

Step 4: Tie a zip-tie around center, and pull it as tight as possible.

Step 5: Dip spongeball in water and play dodgeball outside. It doesn't hurt as much as waterballoons, but you'll get just as wet.

Step 6: When you get tired of wet dodgeball, they work well as window washers :).