On a wholesome note, I once found a sticky note on the door of a bathroom stall with a drawing of a duck that said "Baby Duck thinks you're doing amazing"
My boss found a dirty folded up napkin in a parking lot that just said “Nice job.” Now we just send the picture of it as kind of a “well, you tried at least.”
One time I found a piece of paper saying “the only man I need is Voldemort in a pink two piece bikini” and safe to say I can’t see Voldemort the same afterwards
Kind of a wholesome one but I once left my sketchbook in my math class and when I came back to grab it back, there was writing in it that said “hi I like you’re art, I’ll write this lightly so you can erase it, keep going!” And I kept it to this day.
One time I found a piece of paper in my room that said “watch out!” that doesn’t match anyone in my houses handwriting. Edit: I have found the note once again, if I could show a picture of it on YouTube, I would.
Remember: If you find a random USB-drive somewhere, do not plug it into any devices that you don't want to get bricked or that contains sensitive information. Yes, it could just be a USB stick someone lost or a harmless prank, but it could also be something more malicious.
Weirdest Pieces of Paper you've Found (r/FoundPaper)