I have 2 to share:
1. Years ago my brother had a white Mazda 626. He was notorious for getting up late and scrambling off to work. My wife and I both worked for the post office and one week, Pizza Hut had flyers with red fridge magnets inside. Their malling list was outdated so there were many returned letters. Being that it was 3rd class mail, they were destined for recycling due to the lack of return postage. My wife and I gathered 100's of these red magnets and put them on my brothers car one morning before he went to work. Being late as usual, he didn't have time to remove them so he drove to work like that. His car looked like it had chicken pox. Apparently everyone was starring and pointing. Lol
2. There was this deaf guy who worked with us at the post office and he was constantly pulling pranks on a group of us coworkers. We decided to get him back one day. We strung together about 2 dozen tin cans together and put them under his car and tied them to the rear bumper. When he drove off after work it was quite noisy and funny to watch. I can only imagine all the smiles , pointing and looks he got.
