You won't believe how much fun you can have with a sponge. And we're not talking teensy kitchen sponges, either.
Using a couple of large sponges designed for washing a car (you'll need one per player) and two pails, you can play a soggy game of sponge splash. Simply grab a sponge and stand about 8 feet (2.4 meters) from each other and place water-filled pails on the ground, one at each player's feet. To begin the game, dunk each sponge in the pail and then try to toss it into your opponent's pail. Succeed, and you'll gain a point. The first player to reach five points wins. Bonus: Even if you lose, you still win by getting soaked.
For a fun variation on this game that works well with six or more players, try a no-hands sponge relay. Players lie on their backs on the ground to form two rows. Starting at one end of each line, they'll pass the soaked sponges from one player to another using only their feet. The players to transfer the sponge to the end of their line first win [source: Disney].