My minimalist, don't leave home without it clothing kit is a military poncho, ball cap and glove inserts.
If you can keep your brain and hands functioning, a fire or expedient shelter can be secured.

Variations include the canadian Toque, with pom pom ball. This is not an affectation, but a functional accessory. Inside a hood that pom pom acts as a bearing acnhor to lock hood with head movement. If you've tried to look at something in your peripheral vision and faced material you understand.

The famous Balaclava is another variation for extreme conditions. A great source for knitting your own is
www.hjsstudio.com/redbala.html