The most fun I had in High School, being devious, was in the auditorium. The setting was like a movie theater with sloped seating leading down to the stage on a concrete floor with metal chairs attached. I was assigned to "study hall" there.
I would take a few marbles into the room on the back row and balance a marble on the leg of the seat in front of me, then open my study book. I would then take my foot and ease the marble loose. You could here the marble gain speed as it approched the stage. When it started to ricochet off the metal seats, it sounded like a pin ball machine. I would wait a few minutes and let another one go.
Everyone was laughing so I never got caught, however the teachers were totally upset.
Mission accomplished!
Elmer