Here's a few ideas for survival off grid
Fresh water - Sand point well
Water purification/cooking
Denatured alcohol stove - single jet, double jet, coil type.
http://youtu.be/3Bl0Yr_wS0USolar cooking in pyrex containers
Heating
Rocket mass heaters (rocket stoves)
http://youtu.be/-jzKKIHhTU0waste oil heater
http://youtu.be/X51gD6YXNkobabington burner
http://youtu.be/pBC7fCOGmi0brake drum heater
http://youtu.be/Sir6r1xlHi4Showers - solar
In my search for fire & fire related things I came across these videos. Some of the videos are from tree huggers living off grid & I laughed at them but when America turns to crap everyone will need some survival skills & caveman technology. Is there an app for that ?
The most appealing to me ? The rocket mass heater, they are used in 3rd world countries & are very veratile as they can be fired by animal dung.
People are cooking on top of them. A copper coil can be used for heating water or making steam. The rocket mass stoves exhaust (chimney) is ran underground & will heat the floor. The chimney can be routed thru an earthern bench which absorbs heat during the day while the stove is in use & releases it slowly during the night acting as a heatsink offering a more comfortable nights sleep. Throw a sleeping bag on top & float away into dreams of refrigeration, electricity, cable TV & Raptors
Cheap to build. Simple. They can be bought commercially as a table top stove. A lot of possibilites.
I don't think the average person is prepared for a natural disasters or power outages. How many of you have hand crank weather radios or flashlights? Generators ? Candles ? Wood burners? I could go on... I hope it never happens. I watched the movie Contagion the other day. That will get you thinking. If you haven't seen it I'd recommend it
Just for fun - Rubens tube -
http://youtu.be/J9mgLcZv1Do