Ethernet Shield with ENC28J60

Does anybody know of open source PCB layouts (EAGLE, preferably) for ENC28J60/AtmegaXX8 boards? I was thinking of doing some experiments with bare ethernet, and I'd rather start with a proven design. The closest I've found is the "Business card web server": How-To: Web Server On A Business Card (Part 2) | Hackaday
(but it's PIC24 based.)