i stumbled on your post about eye tracking needs for a relative dealing with MS.
i have some previous experience working with the tobii 4c and the 5 using more off-the-shelf solutions, as well as the more 'true medical grade' side of the tech, and may have some recommendations and learnings to share.
i have temporarily added a way to contact me into the about section of my profile. once i hear from you, or in about a week, i'll clear that out.
drop a line if you're interesting in discussing.
I mean, at that point you could just make a 2d game with the input images.
I could think of some mechanics I could add to Tentacle Typer (my indie game) if I had 3d models of the top 2000 most used nouns. I could decimate vert soup meshes into something usable for all of them in a weekend.
Rigging would take longer. Quick and dirty pass I could do it in a month. Complex animations I wouldn't even try, but Brownian motion on some bones would breath a lot of life into things for basically no effort.
Like it or not, this kind of thing will get absorbed into some workflows eventually.