Earlier quoted context omitted.
Why don’t you bring plastic bags from home? They are very much reusable, you don’t have to throw them out. They are also quite easy to fold into small shapes and keep on you, or your car, or whatever. I have plastic bags which have endured for literal years. I also decided early on that if I forget to bring a bag, I either do without or have to go back to get one. You start remembering really fast after a few times o…
This. HDPE lasts. So reuse it. Cardboard not so much, but where I live one can just take how many boxes one can haul off various shops and they will just thank you.
It's a very solved problem, has been for centuries probably. You can even get some with little wheels! If you absolutely can't handle the looseness of the fruits amongst your shopping, you could use string nets.