My problem is that I hold on to my Macs a bit too long. Then, when I see how much I can get for them (only a few hundred dollars), I decide that it's too much of schlep to sell them, and keep them "just in case". So, while apart from my 24" iMac (which should be arriving today), and my 2 yr old 12" Powerbook, I have no other Macs younger than 5yrs, I have these collecting dust in one location or another:
Mac Plus (w/ 20MB SCSI HD!)
Some sort of LC
Powerbook 1400c
Bondi iMac 233Mhz G3
iBook SE G3 - 466Mhz
David