i just used some jackets
just a table cloth LoL
My girlfriend once. Also a coat before.
Unfortunately I have had to sleep without anything before
I use it a lot, especially in the field of military, quicker and easier than a blanket to get mobile.
i used carpet
covered with leaves ... and a piece of plastic
I used leaves and plastic as a survival method
leaves for insulation.. plastic to keep out the wind and water
I used to put hands to each other and push between legs to become warmer and sleep
i use my feelings of lonliness
So we just lied with our spines towards each other and like heat each others backs
So my answer to your question is a friend with a warm spine