Hi,
I made a 'eXtreme Feedback Device' to display the status of my DSL router using some LED rings. The project uses a Raspberry Pi for the high level network communication (TR-064 / UPnP) and an Arduino Pro Micro to drive the 171 WS2812 LEDs.
A video shows the device in action on youtube.
The device attends also in the AVM "Pimp my Fritz!" contest, feel free to vote.
Michael