Warm feet. Good loose boots with wool socks, even toe warmer /hand pack chemical warmers.

Boot insulators. Easy, light to carry in. Many styles.
https://www.arcticshieldoutdoor.com/boot-insulators---realtree-edge/5637324158.p

My face gets cold. I like a wind proof balaclava AND a big hood. A soft wool scarf is very nice too.

I don't like wearing a wrist watch, especially with a metal band. Sucks heat right off your wrist.

Foam to sit on. I do have a small orange sleeping I have used. Must've worked real well as I evidently caught a nice nap with it.

"Behavior accepted is behavior repeated."

"Strive to be underestimated."