The players form into two teams and sit on the floor facing each other with their legs outstretched. A player from each team is chosen as a 'goalkeeper' and stands behind their team. The leader throws a balloon in and each team tries to knock it over the heads of the opposing team using only their hands. If the balloon touches the floor past the opposing team they score a point. The goalkeeper may move up and down and try to stop the balloon hitting the floor. Gradually introduce more and more balloons.