There used to be this music festival in my college town and they liked to charge absurd money for "tokens" to use at the vendors. I didn't use all of them but I found they worked in the parking meters (I think they detected as slugs, because they immediately gave me an hour and flashed the meter) but nobody in the city bothered to ticket me for it. I dunno, I felt kinda bad but at the same time, I don't like to parallel park.

For what its worth, I paid more for the tokens than I ever did parking.