Keep it in the air
Duration: Quick <10min
Simply keep up the ball (like object) that you're playing with. Whoever drops it drinks the amount the group juggled it too. If multiple people are at fault for the ball dropping they split the drinks. Can't hit it with the same part of the body twice in a row. Can also try with no hands. Use a Soccer ball, hacky sack, volleyball, balloon. Even a stress ball works well.