At my gym with the littler kids we played a variation of "don't let the balloon hit the ground" but with one of those airy light weight rubber balls. The aim of the game was to try and get the other girls out by hitting the ball as far or close as they liked. The rules of the game are if after the ball is hit up into the air and a girl runs to hit it, but then decided not to. She's out. If the ball is hit up and no one goes to hit it, the girl closed to the ball is out. The girls who are out have to sit down where they went out, do 10 pushups, than sit in pike (pointing their toes) until the game is over and thus creating obstacles to run around. The less girls there are the more the girls have to run to hit up the ball, the last girl left is the winner.