I'm always a Room Parent too (girls are in middle school, which leaves my 3rd grade son), and always looking for new ideas. Here's one I'd like to share that the kids at school - no matter what grade! - LOVE (and we've used it at all parties, i.e., Halloween, Christmas, etc.): I call it "Jumping for Donuts". Buy a box or two of small powdered donuts, carefully tie a string thru the hole and secure, then take the other end and tie to either a wooden rod or a wire or string already tied across the room that the teacher uses for hanging artwork. Tie up 4 or 5 donuts at a time (it really helps to have a parent assist with the tying of strings/donuts), and make them JUST long enough for the children to reach. Then have them come over in small groups and with their hands held behind their backs (no hands!) they have to try and grab the donut (sometimes this means jumping) with only their mouth. The other tricky part is that while they are trying to jump and bite the donut, it's swinging back and forth, which only adds to the challenge - and the fun! KIDS LOVE THIS GAME!!! Other than some white powder around mouths, there is no clean up save for the crumbs on the floor. (Novato, CA)