I've been running a relay on a Beaglebone black for about two weeks now and I'm wondering where to take this thing. The Beaglebone black is a 1GHz armhf System on a Chip, with 512 MB RAM. At the moment, it's a dedicated relay running Ubuntu (raring) but Debian is equally as easy to setup. I have a post with very basic installations: http://datko.net/2013/08/24/beagleboneblacktor/
So, what next? I looked at the torrouter project and I think I would have to probably have to redo the roadmap to suit the Beaglebone. Also, there is only one onboard NIC, so I'm not sure if that's a show stopper. I was going to do a fresh install of Debian, install Tor and then build an image so that it could be booting (or flashed to the eMMC) from a SD card, but wether that's better than installing tor oneself, I don't know.
Anyway, just throwing an idea out there. Thanks everybody for the work on tor and I'm happy to be running a relay now.
Josh