Set top box [1], like an Nvidia Shield TV [2], to play (digital) TV and other programs. My point being, would you be able to have this machine function as such (not so much portable, rather standalone with a remote control). Because that way, you take the hardware STB out of the equation, saving you (on the Nvidia Shield TV Pro) a good 200 EUR.
I tried making it my main media center, but I couldn't figure out a way to get good quality streaming from the main services, since they limit the quality and bitrate pretty heavily for the browsers. I thought I could just live with it, but it was bad enough to really bother me. After a lot of effort to try and get things working with different emulators and user agent settings, I was unsuccessful getting the quality tolerable.
I haven't fully given up on that dream, but right now I'm just using an Nvidia Shield TV that I already had.
[1] https://en.wikipedia.org/wiki/Set-top_box
[2] https://en.wikipedia.org/wiki/Nvidia_Shield_TV