Bubble mix doesn't last long in the hands of a child. Create a bubble station to provide a solution. This is so clever! / Only clever until the solution falls below the top of the bubble wand loop - then it doesn't work.
Laser Beam Challenge - Set up a laser obstacle course in a hallway with crepe paper. The crepe paper will tear if the kids bump into it, letting them know they weren't able to get through the course. For added fun, do this in the dark with glow sticks!