A really interesting resource for challenging times is the Simplifier site. It's somewhat Primitive Technology but gets into such things as how to make a crude

A really interesting resource for challenging times is the Simplifier site. It's somewhat Primitive Technology but gets into such things as how to make a crude solar panel and more. I list it specifically because it does cover creating insulated wire. https://simplifier.neocities.org/ https://simplifier.neocities.org/