"Let me make a custom piñata for your next birthday party, corporate event, divorce &c. Finest quality papier-mâché piñatas made of any image and filled with treats and surprises of your choice. Popular picks include you, the client, current and ex-lovers, best friends, and all kinds of mammals."
—Among other things, artist Jing Yu can make anything into a piñata, for $250 and up. Her website has more information, as well as interesting videos of her creations in action. Self-piñata?