This solar powered electric cooker operates on a kind of similar principle (store up heat to cook food using minimal continuous energy input), and is a good example of one way to construct the insulation - https://solar.lowtechmagazine.com/2025/10/how-to-build-a-solar-powered-electric-oven/

If you’re comfortable on the command line, exiftool is pretty flexible and can likely do what you want

I use an old phone that doesn’t hold a charge as an always-on Home Assistant kiosk. Even if you don’t run Home Assistant, there might be some other sort of dashboard-like thing that could be useful to have always visible.

If youve got the space, it can be as simple as just piling them up and leaving them for a few years. My mom does this, they take about three years to break down into usable compost. They’ll go faster if chopped up by running the lawn mower over them before raking, or using a reverse leaf blower that shreds them.

There’s also definitely no need to buy a fancy compost bin - you’d do just fine with a garbage can with the bottom sawn off to let the worms in. My municipality also had bins for sale for like $25 that have worked well for me.