I collect Mattel Thingmaker stuff. I actually have nearly an entire set with boxes. I have 6 ovens, 3 of which worked and 2 of which I have repaired. My kids LOVE making those. I also have a rather large video game collection including a working Famicom Disk System which I have modified to be able to rewrite the disks cards. I have about 40 Famicom, 50 (with duplicates) Famicom Disk System, and 100 Super Famicom games.
I have nearly every mainstream console from Atari 5200 through the Ps2/XBOX era. I do not have a Virtual Boy or Atari 7800 though. All of this is hooked up to a CRT via s-video. I need to get a backup CRT actually and have discussed with my wife just waiting for the right one to pop up on craigslist.
I also collect Ghostbusters stuff and have built a screen accurate proton pack (with most of the parts to build 2 more).
Oh and Lego. Love me some Lego....
Now that I typed this all out I think I may have a problem....