Got more P2/P3 Xeon stuff.
P3 "Pseudo-Xeon" SL4HE 1Ghz/256kb. Basically just a Coppermine in a Slot-2 form factor.
P3 Xeons 550/1Mb SL3C
Intel MS440GX Board
It's actually an OEM board for Gateway, but I flashed the crappy Gateway bios with the Intel one. It's limited to 550Mhz P3 Xeons though, the Intel bios seems to have been gimped to prevent people from flashing Gateway boards to upgrade to 700 or 900Mhz Xeons.
A-Trend Freeway FW-6400/150/WS
Probably one of the coolest boards I have. It'll run both Slot-1 and Slot-2 processors.