I found this on Etsy today: a postcard with an original drawing of The Elephant Man on it. Imagine mailing this postcard to someone you dislike. Just the blank postcard, with no message written on back. I think it's a great idea.
But am I willing to pay $75 just to make someone feel confused, and maybe a little threatened? At first I would say no, but then again, the postcard comes with a signed "certificate of authenticity." So now I'm kind of on the fence. What do you think?