Most Helpful Girl
Something on the ankle or foot could be nice-- you could show it off with a great pair of shoes, but cover it with a sock just as easily. :) This could be a bit trickier, but I also like the idea of putting it behind your ear, so you could style your hair depending on how visible you want it to be on any given day.
Beat of luck with the tattoo! Just out of curiosity, what sort of design are you thinking of?