My hunting bag has 2 heat sheets, 1 mylar, and 2 heavy duty trash bags.

Trash bags with pine needles, straw,etc for bedding, 1 heat sheet for a shelter and one for my person. The mylar will be used as a heat reflector behind the fire.

Those few items weigh next to nothing in my bag, and would turn a potentially dangerous situation into a meer inconvienent situation.