http://123homefree.org/

Aaron Fletcher has grazed his sheep and lived off the land as a traveling shepherd for 12 years. He calls it guerrilla grazing (a step above guerrilla gardening, he says) and he lets his sheep graze - with permission- public parks and side lots. Homeless by choice, he offers his services to small farms in exchange for food or a place to stay (though half his calories come from his sheeps’ milk).

With a tiny metal cart home pulled by his sheep he has a bed, a refrigerator/evaporative cooler, a shower (he uses a pesticide sprayer to pump up the water pressure), power (solar panel), sun oven, a mailbox stove for heat, bicycle tire wheels and a corrugated plastic roof.

Fletcher makes cheese and butter from his sheep milk and forages for seeds, fruits, vegetables and herbs. He’s created a map for foragers in his region. He makes some money with his scythe business - cutting noxious weeds for locals -, but he insists he’s not interested in making money and just hopes to serve as an example for other homeless interested in guerrilla grazing.

Charming tour of a floating house/home houseboat. Wonderful man

Mark Hobson in Tofino Canada has this incredible floating home. It's completely off grid.