Blow up a balloon and stand a few feet away from a wall. With your feet on the ground bounce the balloon against the wall to practice catching it. Then try to catch the balloon while balancing on one foot, while squatting, while lunging. Move away from the wall and keep the balloon up in the air for as long as possible. For an even greater challenge, try to use one hand, leg, or your head to keep the balloon in the air while crab walking on all fours!