[This talk by Tavis Rudd](https://www.youtube.com/watch?v=8SkdfdXWYaI) about a system he used when his hands were afflicted with RSI is pretty interesting.

Not entirely a no-hands approach, but I can't seem to remember the developer who made his first app in the hospital by typing with one/two fingers. He wrote a blogpost about his process that was really inspiring.