I've also got 2 desktops from 2003ish (Athlon64 and Pentium III), they probably work, too, although they're stored in a garage (along with some other stuff like VCRs and CRT displays).

Not to mention routers old and new, all running Linux.

Yeah, why plan for less? All I need to do is scavenge around my property :D

Though a garden, livestock and a greenhouse will be a much higher priority. No one needs any sort of computing when they can't eat.