Even though I just ranted about this in another thread I'm gonna ask you the same thing:Why do so many people like you not put a meaningful location in their profile? What's the big deal?Good way to find these is to look around surplus stores many of them have a bin filled with old hardware, Often you can find motherboards, ISA cards and stuff like that for ridiculously cheap, I got a 386 motherboard with a 386 for $3. Of course you will have to collect bits and pieces and put it together once you find everything, I'm almost finished a build like this all I need is a Floppy controller.
Recycling is a bigger problem for newer system then 486's actually. In a few years you will have a hard time finding P2-Athlon 1 systems since they were all recycled.