I suggest to avoid the temptation to get one of the many cheap Android boxen meant for media playback from Ali Express or the like, as they have a strong tendency to be heavily loaded with malware. Definitely not all of them, but it’s really hard to tell which specific one you’ll get.
That’s a great answer if one already has a NAS (which is not unlikely, given the name of the community). But if that’s not already present (or desired for other reason) then a simple media-PC with some built-in storage is simpler to set up.