Just a word of warning, when bidding on eBay - keep your bids to one item only, maybe a second if you really must.
I completely forgot that I was bidding on 2 items last night and have won the first in the early hours of the morning and my bid is leading on the second. Unfortunately I've already got a 512MB Microdrive, I won a 2.2GB Microdrive overnight and I'm winning on the 4GB Microdrive. Do you see a pattern here?
I was planning on using just the one as the basis for a reaaaaaaaaaaaaaally tiny Linux PC. I'll post more details on it as the project progresses, but it's a stop-gap between finishing my server and starting on R26. It will be about the size of a DVD Boxset I reckon...