How dedicated are you to creating mystery, both for yourself and others? If you have a small amount of money to spare, the fun blog DECEPTOLOGY offers An April Fool's Day prank to play on yourself.
What a delightful idea! I especially like that the mystery is reciprocal. If you read my Wheels of Mystery article in Secret Art Journal, you know I'm on board. It also makes me think of the time when I received a random piece of religious literature through the mail. (At least, I hope it was random.)