I currently have 3 older motherboards supported by coreboot-v2, an Asus P2B (i440bx), P2-99 (i440zx), and MEW-VM (i810), that I'd like to send to someone interested in the project, preferrably in the US to keep the shipping cost down. The only one that's not quite fully supported is the MEW-VM, IIRC it needs pir tables to work correctly; the P2-99 uses the P2B port. I'll include a CPU, memory, video card, network card, if you need it I can even send power supplies and CD-ROMs. The only things I don't have spares of that you'll need are null modem serial cables (~$10, radioshack should still sell them), hard drives, and spare flash chips ($2-3 each, mouser.com). If you're interested, send me you're address and what you need and I'll send one out to you.
-Corey