I suppose it would be mostly practical skills, cooking, fixing things. Usually had to be done by people themselves.
Maybe also mental things like navigating (with or without paper map) and remembering their daily and weekly agendas.
What other things would be a big difference with the people today?
My 2025 (urgh, humble brag) car has a “12V port” that can deliver up to 180W. It also has one in the boot/trunk too.
We use it to power an air pump for inflating inflatable camping things.