If you're looking for an enclosure for your Freetronics EtherTen board, and have access to a 3D printer - then this enclosure published on Thingiverse may be for you. Created by Mark Joyce from an original design by Andrew Gemmell, the enclosure allows for wall-mounting and space for another protoshield on the EtherTen. The end pieces can be mounted to the case via M3 bolts:
When putting together your next Internet-enabled Arduino project - save time, space and money with the Freetronics EtherTen. Apart from being fully Arduino Uno-compatible, it has onboard Ethernet, microSD socket, full USB interface (so you don't need a costly FTDI cable just to upload a sketch!) and supports optional Power-over-Ethernet.