Two teams. One team must tag the members of the other team with a ball. Once a person is tug they must sit down. If the ball touches them in any way while they are sitting down they are back in again. The tagging team must therefore be careful where they throw the ball so it doesn’t touch someone who is already tug. However those sitting down may not move into the path of the ball. Time how long it takes for everyone to get tug and then swap over.