In one of Lauran Ingall's books, http://frodo.marshall.edu/~irby1/laura/frames.html she describes one winter when the family ran out of fire wood and were burning straw that they twisted together.
Would that be permitted on YT or would the straw be muktzeh [ie straw set aside as animal feed, or straw from a mattress]? And could one twist the straw together?
[Obviously I'm not speaking of a pikuach nefesh situation such as the one the Ingalls were in].
