The Steam Link is a $50 in-home streaming device made by Valve. I got one today and have been playing around with it. It surprisingly runs a fairly full feature Linux kernel/rootfs.
Some details and examples https://github.com/ValveSoftware/steamlink-sdk
Extra details from my digging https://www.reddit.com/r/linuxmasterrace/comments/526n88/_/
The Kodi example can actually be compiled and runs https://github.com/painejake/steamlink-bin
Seeing the toolchain and fairly recent libs got me thinking about a RetroArch port. Was wondering if anybody had started looking into this, and if not, I might take a stab at trying a compile from git and getting it to work.