You need a clear indoor space for this one like an empty classroom or fellowship hall. Set two chairs back to back about eight to ten feet feet apart. Drape a rope or a piece of fabric across the chairs for the net. The ball is a balloon. Volleyball rules apply except everyone is seated. You have to stay on the floor to hit the ball… no getting on your knees. I make the general rule that their butt has to be at the ground. My middle and high school kids love this one. It’s funny enough for the laid back kids and just enough competition for the jocks to stay interesting for all.