TARDIS Console Desk/Entertainment Center/Networking Area
A TARDIS Console.
Take three cheapo desks, cut the surfaces in half diagonally, and remount them on a slight angle in a hexagon. Mount the computer towers on odd segments, keyboards, phone, modem, router, etc on evens, sling a monitor on one of the segments, and throw some random sci-fi crap around it. Throw a big light or something in the center, leave some cables loose everywhere, and put a layer of appropriate paint on it. Instant TARDIS console.
That's the basics of it. It wouldn't take too much money, but a bit of time to do properly, especially the angled stuff. Add a little extra cash and a lot of extra time, and maybe use plexiglass and put some LED's as backlight. Put old circuit boards under the plexiglass, maybe use an old laptop with nothing but screensaver on it on one of the panels, and put some extra time into decorating and it'll look great. Maybe even build in an amp and an old Yamaha keyboard for fun.
This is just some speculation and a bit of boredom on my part. I just thought I'd throw this out there.