Stage weights. Dropping them from the fly gallery. Not typically a good idea, unless you’re the Kansas City Repertory Theatre.
I do not condone this type of behavior in a non-controlled environment with a whole lot of precautions in place…
…but I totally condone this behavior. Watch stage weights (pig iron, stage bricks, whatever you call it in your theatre) being dropped on pianos, computers, other random things that needed destroying.
Ready to see some kinetic energy converted to work?