Paper works for all of these purposes.

I’m in one of these bagless wastelands. We use bags from the groceries themselves. Many of the products we buy are also in some form of closeable plastic and just get put into a second piece of plastic for the short trip home.

Yay more paper bags for my compost however

I don’t live in Norway but where I live in the US plastic bags have been illegal for years

I get mine from visiting family in MA, they always have so many extra