My attic is full of stuff spanning the years of home computers (most of which cost a fortune at the time), from my first home built NASCOM2, through various PCs - including original clones, XTs, ATs, and others, a couple of Sinclair Spectrum variants and a ZX80.
I can't bring myself to chuck them when I think what they cost. There may be a market for some of the NASCOM stuff, but the rest is likely just landfill.