My late Father was a avid old school deer hunter.
He and his buddies would set-up a army surplus tent and stay in the woods for a week at a time.

He spent more than one night in the woods, trailing a wounded deer.
They all wore the full wool coats and bibs. Dad always carried a few tins of sardines and kitchen matches in a old pill bottle.

He also carried 2 big garbage bags in his pocket. If he had to spend night in woods, he would find a old stump and set in on fire. Then he would step into one bag and tie it off each side of his waist.
The other bag he would cut a slit for his head and arms. He stayed warm and dry and eventually would come back dragging that big buck ;)

The new woven type lawn and leaf bags would be excellent for a make-shift bivy.