>>457589>>457590Also, one of these:
http://survivalcandlestore.com/collections/basic-survival-candles/products/super-size-survival-candleWould probably last you 2-3 weeks provided you aren't using it for more than 12 hours a day. It would probably throw off enough heat to keep that yellow shelter comfortable at night so long as you have a good sleeping bag and are insulated from the ground.
For extra points, line the inside-top of the shelter with a mylar blanket to reflect all your heat loss.
