I've long been a fan of going out into the woods with minimal tools (decent belt knife, axe, tarp, blanket, billy can and a box of matches) - you'd be surprised at the hack value you can find out there. Finding the most elegant way to turn a couple of bits of tree into a chair can be far more rewarding than a few hours spent twiddling your .emacs file, I can tell you!

Sadly, it's not immediately apparent how to turn any of this into a paying 'career' - unless your name's Ray Mears, of course, or you're prepared to do it full-time and become a hermit (tempting, sometimes, I know...).

One of my ideal visions for an outdoors-ish job would be making and installing energy producing wind-turbines from scrap, which is something I've been interested in for a good while now. You'd likely never get rich doing it but there's an increasing market for off-grid energy that may soon be enough to support a person.