Keep the players in the same formation. Each group is given a large
sheet which they hold by the edges parallel to the floor. At a given
signal the director tosses a balloon into the center of the sheet.
Each team tries to keep this balloon tossing in the air by moving the
sheet up and down. No one is allowed to touch the balloon save the
director. Even if it falls to the floor the director must pick it up
and put it back in place. The group which keeps the balloon moving the
greatest number of minutes wins. Each player of that winning group gets
a balloon as a prize.