I've still got a ZX81, my first computer ever, back at my parents house in the UK. I'd kill to get another BBC Model B as it's still my most loved computer. The hours I spent as a kid playing Elite were crazy.
I also had an Atari ST as it was the first affordable home computer with a midi interface and I hooked it up to my Mini Moog and my Yamaha DX7. I also played Dungeon Master on it and recently found that game again in Java format for my PC. Good times.
I also had an Amiga A500, whic I also loved. If I could find another BBC, an ST and an Amiga again, i'd be in heaven. I've got no room to put them anywhere but i'd still want them.
I also build high end PCs as a hobby too and my current rig is insanely good as I use it for movie editing and music production as well as games. I've got two GTX 1080Ti, 32Gig RAM, 12 Tb HDD, an i7 6700K watercooled and overclocked and three monitors, one of which is 4k.