Hey, this is a great idea. Thanks, Kai!
I'd add the NeXT cube to the list. For sheer sex appeal, little can beat
a black magnesium cube.
I'd also be curious as to why you consider a particular microcomputer
collectible. Certain ones are obvious - the Atari Portfolio was the first
palmtop; the Epson HX-20 was the first laptop; and so on. But the
qualities of many of these are unknown to me, and I'd love to know more
about them.
-- Bill