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. First person in each line will throw their bean bags into the can. Station leader will see how many bean bags made target. Then give the bean bags to the next student and repeat.