Anime Tattoos

Anime is something that I will always have as a part of my life. This is something I decided years ago. In my opinion, the first rule of getting a tattoo is would you, 5 years from now, want this image on your body still. Would you have gotten it 5 years ago and still be happy with it? I got my first tattoo last year, the Fairy Tail guild emblem on my right shoulder, and I plan to get my second this year when the weather warms up in March/April. I already know I'm going for Nami's tattoo on my left shoulder, but I'm not sure what else I would want. I want to eventually be the anime tattoo guy, but I don't want them all to be from the same series. I really want my 3rd to be Sword Art Online related, but can't think of anything that would lend itself to a tattoo well other than Kirito's Elucidator. Here's some ideas I have for the future.

The Straw Hats Jolly Roger
Kiritsugu's command seal from Fate/Zero
Something from FMA, probably the Ouroboros

If you guys have any good ideas, I'm willing to consider them