You can add competition to this by competing as groups or individuals as to how many marbles they can get out of the pool. Divide up in 5 groups. First person from each line, run to chair and sit on balloon until it pops. When all 5 students balloon is popped the next five can have a turn. Attach balloon to ankle.
Boys try to stomp each other's balloon.
Last one with balloon not popped wins. Then the Girls get a turn. Watch out for the other guy, soap does not feel good in your eyes. Divide your class into 4 groups. Use your bubble wand to make as many bubbles as yu can.