Another option, not that its available yet, but something to keep an eye on:
Battery powered stove/cup, that can be charged by a solar panel.
Won’t be cheap though.
A review by someone who could get hold of a demo one would be nice – hint hint
And a little drone light relief
Yes, its excellent.
I’ve worn something similar to these for the last 4 years for work. No ankle support, but my feet have been comfortable and dry. Not cheap either, but 4-5 days a week for 4 years, they have certainly lasted, and still look fine. Heel is starting to wear though.