Ideas for my first tattoo

I turned 19 a while ago and I still haven't gotten my first tattoo. I really want to get something but I want to make sure it's meaningful and in an easily hide-able spot on my body.

So here's my idea: a yin yang symbol on the nape of my neck, fairly small and very simple.

I've also toyed with the idea of a hamsa symbol (I've worn a hamsa necklace for years) or a Darwin fish. The only problem with these two is I'm not sure where I could get them done where they were easily hide-able, although, preferably I plan to have all 3 at some point.