I'd really like a whole F-16C cockpit with everything inside interfaced to a PC, perhaps with the whole thing mounted on a motion platform and a display system that surrounds practically the whole outside area, all for Falcon 4.0's sake.
Then a whole Ka-50 cockpit for DCS: Black Shark as well.
I'd also like a set of those old Virtual World Tesla pods that I can't seem to find in arcades anymore.
Having the real aircraft would also be nice, but they're not exactly simple machines to operate, especially the startup procedures...
As for something more down-to-earth, I'd like a Maybach or Rolls-Royce or similar ultra-luxury vehicle for general driving...and when it's performance I'm after, I'd like an '03 Impreza in its WRC configuration, paddle shift and all.
Then I'd like a decent house of my own, complete with good server and networking infrastructure (I'd want my own game servers on my own ISP), CNC mills, BGA rework stations, IC programmers, and anything else I could use to build high-quality peripherals myself, and have all of this powered by some combination of solar panels, wind turbines, and a nuclear power plant. Basically, anything and everything that allows me to become largely self-sufficient in my interests.
Yeah, fat chance. But one can dream...