I am thinking of getting a tattoo my wrist. What do you think?
Tattoos are a form of permanent pod modification using ink, as long as you're okay with it being there for a long time!
I guess I should think long and hard about that. I was thinking about a small cross. 
Tattoos typically fall into one of three categories, decorative, symbolic, or pictoral. I'm assuming that cross whould be symbolic for you?