Continuing on my thoughts about woodworking, I was looking at laser engraved wood and CNC machines. Here are a couple of DIY videos from YouTube.
There is a company here in Eugene which specializes in this.
Here is a DIY project page: http://davidegironi.blogspot.it/2014/07/38mm-x-38mm-laser-engraver-build-using.html
It also seems that andrio or bananna pi are also used. https://en.wikipedia.org/wiki/Banana_Pi