9-square (in the air) Splash
Pick 3 Water Games/Sports:
Water Balloon Dodgeball (400 balloons)
Battleship (200 balloons)
Slip'N Slide Kickball
Dribble Dribble Drench (multiple relay games for ages 5 and under)
Aquaball (water volleyball w/ 100 balloons)
WaterTag (like laser tag with water sensors).