I would consider anything in the way of another Japanese rangefinders except Yashicas, I already have three. TLRs are always fun, medium format folders, anything older that would be similar in value or difficult to find. I would also consider Russian rangefinders. I'm not really interested in P&S or SLRs but if you have something old or interesting I might be interested. I don't have much Nikon gear, prefering Canon.
If you have any Mamiya 645 lenses I'd really be interested! Or canon lenses, or... that's part of the reason I put these up, hit me with something interesting.