Give everyone who wants to play a piece of construction paper. Each player makes his own paper sailboat from the construction paper. Fill a plastic kiddie pool with water where the participants can race their boats. Play several games if you have a small pool and lots of players. Each person places her boat in the water and does what she can, such as blowing on her boat or making waves in the water, without touching the boat. Whoever reaches the end of the pool or the finish line first wins the game.