I'll tell you right now, man: never sell your old computers, because if you ever change your mind, it's going to cost you 2-4 times as much to get back what you had.
Very true, and it's shocking just how many times you'll find a use for them once they are gone. I've got an old (xp) laptop coming my way next week and I'm damn glad of it, at last my vinyl cutter can be free of my main PC. As for Amigas and other "retro" hardware, even a stock A500, a C64 or Spectrum can be a great asset, kids can get to see that computers are not to be taken for granted and in all reality have a relatively short history. It helps give them a bit of perspective on the 600MHz touchscreen beasties that they think of as toys.
