I can lend u my Pear of Anguish (once ya wash it before returning it):
We used to do the camera thing when i worked in a photoshop.
I had a mate who I always ended up doing bare knuckle kick boxing fights at drunken BBQ's - we wake up in bits the next day. We'd go fairly hard but we pretty much had an unwritten 'open hand strikes' to the head only...