Wonderbag -- a no electricity needed slow-cooker

http://www.treehugger.com/sustainable-product-design/wonderbag-electricity-free-slow-cooker.html

"Because it works by using a little fuel to bring foods to a boil before putting the hot pot in the bag, Collins notes that the Wonderbag greatly reduces the use of additional energy and frees up women's precious time. This means women can cook delicious, hot meals while saving energy and money for their families and spend more hours looking after children, learning or earning their own income..."

Check it out!
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CP:  Reminds me a tip my roommate gave me when we were renting rooms and no access to the kitchen accept to boil water. She would put a handful of  barley grains into the thermo flask and pour in hot boiling water. Then she will close the lid and let it sit for a few hours. Then in the evening we get a 'cooling' barley water to drink, just like as if it has been boiling in the pot the whole day (when mom used to make).

I guess, when u live away from home, one has to improvise :)