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.
How to Make a Toy Bow and Arrow. The bow and arrow is a classic toy that both kids and adults can enjoyed either as a toy or as an addition to a costume. But store bought bows and arrows can be expensive, and a trip to the store to buy one.