I don't have a tremendously large retro collection these days, much to my sorrow. There are several reasons for this including limited space, a video-game-hating wife, and this very blog (I spend a large portion of my gaming time on emulators grabbing screen shots), but I do still have a few decent items left. One of my favourites is rarest console I own - a 'Skeleton' Saturn, as they have become known.
Some years later, of course, the rather more exclusive nature of my naked special Saturn became apparent and it has taken pride of place in my collection ever since, and it also prompted me to seek out special editions of other consoles in the future; I bought a 'Platinum' GameCube, for example, which I thought was rarer than it actually is (chortle), and I guess that's also why I kept putting off buying an Xbox until I could find one of the lovely green ones.
These days are pretty much over though. With a couple of long-overdue exceptions (PC Engine Duo!) I don't expect to buy any more actual consoles in the foreseeable future and I certainly don't have the finances in place to procure one of those crazy prototype machines that pop up now and then (i.e. Sega Neptune), so I suspect my elegant Skeleton Saturn will remain my crown jewel for some time to come.