Where I live in the UK free plastic bags were removed from supermarkets over seven years ago. The result was that the use of them dropped drastically. Now many towns are trying to become plastic free. Earlier this year town introduced 'borrow bags' where should one have forgotten a bag and need one shops will loan one which you then return. The picture below shows some of these bags that a group I belong to made for the scheme. Old tee shirts are recycled and with sleeves removed and the bottom sewn together or some prefer to cut the bottom edge and tie the small piece of fabric together. The bag second to the right of the photo is made from a large roll of fabric donated to us to make the bags. Plastic bags are still available but at a cost and most of us have a great selection of fabric bags that we have made or bought
I just put the groceries back in the cart and drive them to my car. I am afraid I would forget to return the "borrowed" bag.