My cousins and I (in our JD days) rigged a bathroom stall door with several 'burglar alarms': Strings and a little black powder in the middle, a friction primer: pull `em apart? 'Bang!'
We checked later and found a pair of abandoned Jockey shorts on the floor.Booglar alarums are standard equipment in the `Li'l B******' fanny pack.
I was the lab assistant in HS chemistry. The last day of school I had to inventory the equipment in the drawers.
Every time I opened one, there was a little explosion and a puff of purple smoke.
Nitrogen Triiodide