Y'all,

I have no association (and have never done business) with the following
companies, but the offers seem reasonable/interesting to this crowd:

http://www.macsolutions.com/pgi-Product%20Spec?718908180730
US$12 for the M4709Z/A 10BaseT Tulip-based PCI ethernet card for the
Apple Network Server (since the built-in Mace-based ethernet seems to not
work with NetBSD).  Potentially netbootable in Open Firmware on models
with PCI slots, since it comes from Apple and is for their AIX machine.

http://www.megamacs.com/cgi-bin/wm4/wm_det.cgi?search_request_button=yes&keywords=ApPM7500-100-16-U&product=PowerMacs&cart_id=
US$100 PowerMacintosh 7500 with 100 MHz 601
This one's interesting if someone wanted to add PPC 601 support.  This
model is upgradable -- that is, it comes with a 601, but you can buy a
cheap (~US$30) 604 or a not-quite-so-cheap (US$150) G3 for it.

  -- MW