They had a shit car sitting in the middle of the road and for five dollars they gave you your choice of a sledge hammer of a police battering ram and you got to beat the shit out of it ten times, or for ten dollars you got five minutes. This thing had the whole block full of people watch people smash the shit out of this car. It was like an early ninety's dodge neon that I assume was donated/totaled earlier. i'm thinking for an interesting way to make money you could set one up in your schools parking lot for a carnival or fundraiser or if you're over the age of sixteen you could do this down at the park or something as a small time job for a weekend or wahtever

Better yet, do this with random parked cars.

When the owner comes back, take all the money, run and have lulz.

this.

Yea they did this at my college a few years ago, I think it was 5 bucks for 3 minutes or something, it was a big success.
If you know of a junkyard where you think you can keep getting cheap junkers and a place that will let you do it then go for it.

They did that at my school too. Made lots of money & had lots of onlookers too.

Make a sledgehammer with a steel handle though.
Like a peice of galvanised tubing or suchlike. Weld it in there, make a few.

Their hammers handle was wooden & it got broken by a 'over strike' & that slowed things down a bit.

Another year they used a piano, that was fun too.