Found these (somewhat older boards) at Newegg, both of them are refurbished, but are not bad for the price.
MSI K7T266 PRO2 VIA KT266A + 8233CDE 266MHz FSB ATX MOTHERBOARD - OEM P/N# 6380-060. for AMD CPU prcessors, 3 x 184-pin DDR DIMM, MAX 3GB, 4X AGP, No AGP Pro, 3 DDR, 5 PCI, 1 CNR Slots. Supports Ultra ATA 100, on-board audio - Soft Audio No RAID - No AGP pro support, (OEM, BAREBONE) Model#: K7T266 Pro2
SHUTTLE AK31A AMD K7 VIA APOLLO KT266A SOCKET A ATX MOTHERBOARD OEMVIA VT8366A/VT8233 Chipset. Supports AMD K7 Athlon/Duron FSB 200/266 Processors. Four 184 Pin Up to 4GB DDR SDRAM DIMM. Onboard AC97 Audio 1 4XAGP, 6XPCI, 1XCNR. Supports ATA 33/66/100 MB/s IDE Interface. Supports 6 USB ports Hardward Monitoring. (OEM, BAREBONE)
MSI K7T266 PRO2 VIA KT266A + 8233CDE 266MHz FSB ATX MOTHERBOARD - OEM P/N# 6380-060. for AMD CPU prcessors, 3 x 184-pin DDR DIMM, MAX 3GB, 4X AGP, No AGP Pro, 3 DDR, 5 PCI, 1 CNR Slots. Supports Ultra ATA 100, on-board audio - Soft Audio No RAID - No AGP pro support, (OEM, BAREBONE) Model#: K7T266 Pro2
SHUTTLE AK31A AMD K7 VIA APOLLO KT266A SOCKET A ATX MOTHERBOARD OEMVIA VT8366A/VT8233 Chipset. Supports AMD K7 Athlon/Duron FSB 200/266 Processors. Four 184 Pin Up to 4GB DDR SDRAM DIMM. Onboard AC97 Audio 1 4XAGP, 6XPCI, 1XCNR. Supports ATA 33/66/100 MB/s IDE Interface. Supports 6 USB ports Hardward Monitoring. (OEM, BAREBONE)