We were so bored in first block that we got a trash bag trapped a bunch of air in it and tied it at the end so it had a tail. Then we decided it looked like a jellyfish and started throwing it in the air and blowing at it to make it move like jellyfish. Then when the projector beamed on it, it had colors like a jellfish so we started to hit it in the air to see the colors even more until we just started hitting it at eachother. We turned a simple trashbag into jellyfish volleyball it was great. All of this in ROTC.