A couple of updates -
A newly acquired IBM ThinkPad 560E has been successfully loaded with Openstep 4.3 and sports a 166MHz Pentium, 80MB RAM, TFT display, an original 2GB hard drive, an external floppy, an Adaptec SCSI card and a 3COM ethernet card in the PCMCIA slots. I like it. It feels a bit like a black iBook at 1" thick with a nice 12" screen (even though it's only 800x600). It gets filed into the "roots of Mac OS X" section of the collection
The 2007 Santa Rosa 15" MacBook Pro 2.4GHz that I picked in pieces for $60 is back together. I spent another $35 on a DC card and $115 on an LCD panel. Not bad for a total $210 investment, I guess. Internally it has 4GB RAM and a little 60GB SATA drive. If it proves stable in the next several weeks, I may look at sending my 13" 2008 MacBook on it's merry way.