I messed up my wrists from typing/mousing too much a number of years ago, so I spent a couple years working at a grocery store while building a new kind of text editor meant for efficiently writing code with motion sensors (e.g. Leap Motion, Kinect). It made it to the front page here, which was an interesting experience, but my end game with the project was basically, "get far enough, post to HN and the world will see how cool this is, and somehow you'll be able to continue working on it"—and that did not materialize.
Project: http://symbolflux.com/projects/tiledtext [video]
Original Show HN: https://news.ycombinator.com/item?id=5306155