Working on a cozy for the Grease Pot.
I’m using Reflectix, just a cylinder as tall as the pot and sized to fit the pot up to its rim. A circle of Reflectix for the base, and another short cylinder (an inch or so) for the top, also with a circular piece of Reflectix. Aluminum foil tape holds it all together, and it is light, effective, and easy to use (I can eat out of the pot with the pot in the bottom part, which helps keep the food hot).
It is kind of flimsy, but unlikely to get damaged because the pot will give it an endoskeleton, even in my pack. Plus it is not truly essential gear, if it’s damaged I’ll just use more fuel.