How many games can you invent or play using inner tubes? Obviously, swimming with them is an easy option...
... then we have "steal the bacon" with inner tubes (this was VERY fun to watch- and everyone was exhausted afterwards!)
... then we have boys using them to hang out during games (pictured from left are ... Majesty, Stephen in center front, Steven in back, and Jordan on the right). 
... and of course more pool time with the inner tubes.