Find something you love and has meaning to you.
For me, two out my 3 tatoos have a rose with them. That's significant to me because the very first poem I wrote and had published was called "The Rose". My tatoo on my forearm was supposed to be sitting into the middle of a rose on my hand, but since I work with my hands I never had that portion done....one day I will finish it, maybe when I have it touched up and add some color to it.
But as long as you have something meaningful in your life you can find a tatoo for it