Off the grid, i.e. off the power grid, or not on paper, like no drivers license, social security number, tax ID number?
They are very different, it sounds like you are asking about both.
off the power grid is easy, solar hydro and wind power are all options in most communities. GL
Some of my local favorites :
Ramps, in season now. We are using them at the restaurant I work at. Lady slipper grows with them and is poisonous, it looks just like it but has no bulb.
Morel mushrooms. I've payed 20 bucks a pound for them and they are free out here.