I've got a 5400/120 with 128 megs of memory that I'd like to see get some use in a better home. Its in great shape, I got it from NCSU Surplus, and I can ship it with or without a hard drive, unfortunately, it doesn't look like I'll be able to get an OS on it before it ships though, my only OS 8 or 9 CD that I can find is from my iMac and it won't install on there.
Its a great little all-in-one box and you can even get a G3 upgrade for it up to 300-400 MHz from Sonnet so check it out!
~ian