Practical Retrofitting for Obsolete Devices | Much like classic cars can be fitted with an EV motor, it is possible to retrofit older devices in order to make them usable again in a connected world
Nice that the link ultimately leads to a PDF, for those of us who have ditched residential Internet but like to collect stuff for offline reading.
The wii was mentioned in the PDF but not in any detail. I was able to install some FOSS apps on an otherwise useless wii (which was designed to be dependent on a cloud store which has been unplugged). One useful app converted the wii into a media player that could access Samba shares on the network. So if you are lucky enough to have non-“smart” TVs (read: non-snooping TVs), you can use a wii to access your video library -- which can be fed by MythTV.
Roku abandoned the consumers just like Nintendo did with the wii. But you can also install a FOSS app that makes the Roku into a media player that you control, which can be fed by MythTV content for example.
There is OpenTom.
The shame of it is that so few people are interested in keeping old hardware going that projects to liberate devices are half-baked and fizzle out with no persistent maintainers. Someone starts a work of passion but these one-man shows never get the traction they need.