There's a store in my hometown dedicated entirely to this type of person. If you're ever in McLean, VA, I highly recommend a trip to Deja Vu Audio.

The area is known for being a pretty wealthy one, so there's plenty of folks who can indulge in this type of hobby. Every once and a while there's a story in a local paper about these people who put their external power supplies in sandboxes, call electricians to put their fridge on another circuit, and buy tiny 6" high stands that hold their cables off the floor with fishing line.

I just like looking around the store at all the vacuum tube amps.