One time, ~~at band camp~~ in college, for April Fool's, someone placed a Ton of sheets of adhesive googly eyes on the bulletin boards around campus.
They didn't stick them on anything, they just made a bunch of little slips of eyes available and let the magic happen.
I have a little collection of car critters that I keep on rotation, all with pun names.
Just one out at a time, I don't like the clutter, but when I feel sad, I'll sort through a few and put 'em on the spot on my dash.
I've given out more than a few to people when they've needed them more than me, like my little pa-car-isu to the girl who was stressed out about getting her blood drawn, or my cArcanine to a boy who was having trouble waiting quietly with his mom and baby brother.