Prank Parking Tickets
Looks like a parking ticket in a car window but upon closer inspection is fake. Great for practical jokes but also practical for letting them know they parked shittily.
You know those people. The ones that take up two spaces, or block someone in, or otherwise just cause problems for everyone else. This is a nice way to get their blood pumping a little faster and let them know they suck at the same time!
Even better, it's a whole pack of 25 for just $2.17. Can't beat that price.