I guess it would be possible to make a pad of some sort with these ( https://www.sparkfun.com/products/11289 ) in it. Not sure what the battery life would be.
With beauty all around you, may you walk.
coil copper tubing around you wood cook stove,leaving gaps for the air to get to the fire.leave both ends away from the fire far enough to ensure that the braided fuel line hoses do not melt (clear rubber kind with webbing)..run the line up from the fire taller than your hammock by a little,now start down through the bottom of your hammock under the u q,now back to the other end of copper.fill full of water,light your fire ,and the natural rising of hot water will push water through the line into your hammock,and them back to the cool water return end.no motor no battery just physics.and a piece of copper/rubber line....by the way darn you for sparking my obsesive compulsive nature...lol ps darn you you could put a light valve in the hose by your head to shut off the flow of water to regulate temperature.would have to put in a blow off vave in the system for pressure safety.
Last edited by hairbear; 12-09-2012 at 20:09.
with this system you would already have hot water in the a m.if you got a good bed of coals then covered them in rocks,then add a little wood to the top, id bet it would pump quite a while.