For those in the US, I read from the rPi site that MagPi will be your end in 2 weeks (actually 3 weeks from printing as sent by ship)!

Now for the tinkerers who'd rather end up with a $30+ PiZERO contraption of a bitcoin mining rig controller, here's some inspiration .... this guy is working on a daughter board that adds wifi .... though for CNC https://openhardwarecoza.wordpress.com/2015/11/27/raspberry-pi-zero-grbl-all-in-one-cnc-controller/