Form a few groups. Give each group 5 balloons. Each team chooses someone to guard their balloons. Two or more people get to be the "snatcher". The remaining people in the teams form forts and guard the balloons . The "Snatchers" try to snatch ballons from the other snatchers and forts. The people that are the must protect their balloons. After a set amount of time the team with the most balloons from other teams is the winner.