This is all LP related. So far, that's the only kind I'd really want to get. Any of which, I'd want to have drawn up myself for a possible design.
First off, the band's autographs. I know someday I'll end up getting their autographs tattooed. Thing is, I need them first. I have references and all, but I'd rather it be ones that they knew were gonna be tattooed.
With that out of the way. Some of my favorite stuff is from Reanimation. All of the robots are sweet, but I'm thinking this one:

I actually have a poster of this one, without any cutoffs, so it's all good.
The major thing would be the wings. I doubt they'd use white ink for them. Actually, I was thinking of placing each of the four symbols seen on that page on each of the wing tips.
Another awesome one, if not obvious is:

The street soldier. Chester has that on his leg.
Both of them could work on arms, well below the ribs, and awesome on the back. I'm hesitant of getting a back tattoo. I kinda don't want a tattoo that would be hard to admire for myself. Sure a picture could be taken, but I don't know.
Another nice one, perfect for a shoulder is this:
http://lpprojekt.com/gallery/displayimage.php?album=random&cat=9&pos=-90
The one thing I'd hate about getting this is the fact that the tattooist could so screw that up. This tattoo would need to be perfect lines, perfect circle, and clean. Same with those logos on the first pic. I'd have to know and trust the tattooist well to have that sucka done.
Some other stuff I was thinking of is the art Mike does. He makes these sweet characters, a lot of it is found in the Fort Minor stuff. Making a collage of that stuff would be nice.
I wonder what the chances are of bugging the band members into writting their autographs and have them draw something up each... That would be ******** awesome. Joe would most likely draw something or leave some funny comment about it as part of it, haha. I'm not sure what exactly, but it'd be something I'd do in the same situation. We both have the same weird personality. He tends to do stuff while talking to people that I do. It's creepy.
But yea, just some ideas. The way I see it, I won't have anything done until I have a ton of them drawn out and plotting out where each would go and in what order I'd get them.