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

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 (not mentioned in the PDF)

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.

TomTom (not mentioned in the PDF)

There is OpenTom.

The problem -- it’s all glitchy

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.