During exams my university would drag an old car into the middle of the campus, and students were allowed to beat it to a pulp for $5. They'd give you a bat and you could just smash it to pieces.
When I was on the fire department (late 2000s) we bought cars for like $75 each to practice disassembling, I assume from the junkyard. I bet the price hasn't changed too much.
My old campus had a huge Canada geese problem, their aggressive breeding season coincided with spring exams. People would get out of exams and then charge the flocks of angry defensive geese. Leads to a few stitches and at least one broken arm.
Not sure if I'd agree, but many have called it weird. Online voodoo dolls. You could make a replica of someone and do things to it. Consider it like ArtFight's weird younger sibling.
Not sure why you’re downvoted. The question is not what your favorite stress relief is. It’s about weird ones you’ve heard of. Abusing the homeless is definitely pretty high on weird (and completely shitty) way to stress relief.