You should be able to find an engraver that will do it for you, how much that'll cost I have no clue, but at least it'll be an original. I know I've seen ones with leaves on them, but customs are the way to go.
Two girls I met in Cozumel bought me a zippo and had it engraved as a thank you. It's got a harley emblem on one side and the other basically has my avatar with my name on the top.