The 21 Inc miner mines bitcoins and is connected to a Raspberry Pi which has an HDMI output.

JoyStream is a way of paying seeders for Bittorrents.
https://www.youtube.com/watch?v=uj8di5KkoMwCombine the two and you basically have a small box you can plug into your TV and watch streaming video for free.
Separate they both have their flaws. The miner does not generate much money, probably about as much as you're paying in electricity to run it.
JoyStream is like running Kodi (which is free) but paying for it. But if you use Kodi you've experienced the frustration of trying to find a decent stream out of a list of about 100 streams of each TV show/movie.
Combining both you have a pre-configured device that only costs you the electricity used to run it (plus the cost of the device) in order to receive quality streamed videos.
You can use your cell phone as a remote.