Satan's Little Helper,
most shops that cater to a lot of custom work have a free tattoo of the month. Its always something rediculous, like a monkey masturbating, or a flying penis, or a canadian flag with a marijuana leaf. It would surprise you how many will pony up it and do it, just for the respect.
(most piercing shops have a piercing that is free or steeply reduced, due to the tremendous stupidity or pain level of it. Our's is a Nasallang (google it) Someone took us up on it last night..)