This is always a fun thing to do on a slow day. I have a Cyrix processor based system out in the garage that was one of the last processors that made.
I have a 486dx4-100 with I think 32MB ram, and a WD 1.6 GB (fastest drive of the day) hard drive and a kenwood 72x IDE cdrom with win ME loaded on it and it still runs and boots. (at least it did last time I checked)
I have several pentium systems, a pentium pro system, and a 386 dx40 with a MFM hard drive in it. That thing sounds like a typewriter. I used to have my old 8088 but it died.