Yes, newspapers do work for keeping in heat, LOL, a thought just went through my mind, how warm would a cover of a good layer of newspapers, sandwiched between 2 layers of plastic be?
Should be warm.
Parachutes are a good keeper in of body heat and we used them as the filling of comforters, but not for babies.
I learned about the plastic wear from the farm workers in Wellton, they take a big trash bag and cut a head opening and the arm openings and make an instant rain coat and it would be warm too.
My shoulders were acting up for awhile and I started wearing a double plastic bag as a shawl, it covers the shoulders and I keep it closed with a clothes pin.....it weighs nothing, and I forget that I am wearing it, until I lay down and the clothes pin hits my chin.
I have a fancy crocheted shawl laying over there, but it gets in the way and I keep dipping the tails in the water if I get close to water or turn it on.
” they take a big trash bag and cut a head opening and the arm openings and make an instant rain coat and it would be warm too.”
But it makes you sweat. Sweat + cold = death. We used to just put them over our heads without holes like a ghost costume. You can see through the non-black ones.
But plastic is a killer in the woods. Plastic and cotton. Fleece is the best for staying warm.
We did an event recently when it was -6F outside (not windchill). We learned alot about keeping warm. The looser the socks and boots, the warmer the feet. A tight fit cuts down circulation and causes cold feet. If you have mutiple sock layers and your feet get cold, remove a sock layer. It’s the same with hands. Mittens are best because your fingers stay together and warm each other.
Before being injured I used to like to backpack quite a bit. I got to where I didn't pack raingear because the plastic trash bags did the trick just fine like you said. And there were at least 5 dozen uses for a couple of extra trash bags, whereas the rain gear was more limited. Gotta pack light when you're haulin' ALL your supplies on your back!