Maybe I'll see if I can still get a Kodi box. Don't need a whole laptop under the TV to do that. And I don't want to have to train my mother-in-law how to use the laptop.
Booted, gave pretty interface, failed miserably. Tried again a year later using Ubuntu. Reused the remote keyboard that came with the box. Simply worked.
But first I'm going to put it on my phone and do some screen mirroring via the Roku I've already got. If the content selection and UI looks good I'll get the Fire stick.