Rocket stove in use - everyone needs to know how to build/use one of these for "those" times when there's no other way to cook. (My Junior Girl Scout Handbook showed this stove made with a large coffee can.
The Swedish Fire Torch, also known as a Canadian Candle, is a great way to set up a fire as it uses only one log, has a flat cooking surface and is self feeding, meaning it can burn for several hou… (Primitive Camping Hacks)
We learned this in survival training when I was in the Navy. The Dakota fire hole - conserves wood while minimizing smoke and light from the fire. it also helps cut the light and smoke that can be seen by others or, eh hem, Walkers.