I have one around my wrist, one on my upper chest, one on my lower back and one between my shoulder blades. They're all smallish, I'd say the biggest one is 7 inches by 7 inches.
I don't want any place typically girly (every girl I know with a tattoo has it on her ankle), and my arms tend to gain weight first, so those places are out.
Keep in mind I also really dislike not being able to SEE my tattoos. The ones on my back are awesome, but I like to view my pieces.
I think I'm SOL for ideas. *sigh*