Something like this would probaly work well, you would probaly be able to hack it and put tbe pi inside. http://www.dx.com/p/combo-usb-2-0-lan-ethernet-adapter

Something like this would probaly work well, you would probaly be able to hack it and put tbe pi inside. http://www.dx.com/p/combo-usb-2-0-lan-ethernet-adapter-3-port-hub-for-tablet-pc-dark-grey-147462#.VleeZWiwrMI http://www.dx.com/p/combo-usb-2-0-lan-ethernet-adapter-3-por...