Ask yourself how much physical space you're okay with "investing" into your collection. Both for storage and for display. If a room full of boxed computers and

Ask yourself how much physical space you're okay with "investing" into your collection. Both for storage and for display. If a room full of boxed computers and a 5m wide shelf sound sane to you, so be it. Just stick to that limit. And if you're out of space but really want that shiny thing, get rid of something you value less (and remember: You're selling it off to some other person, not trashing it. And that person will probably feel as happy now as you felt when you first got that second Amiga 1000). Add to that, you should check the condition of the equipment regularly. If you have zero days per year for that, you'll be very sad if you try to turn on that Apple 2 in a decade or two. But you already know that. OTOH if you have half a Saturday per month, you can probably open up and visually inspect at least 20 machines per year; if you have the know-how, maybe pick one to repair. Doesn't matter if you do it over a weekend or over two years. If you have a room for storage, outfit it with a desk for your current repair project - good lightning, scopes, soldering station, good note taking (important when rarely working on it), decent part bins.