Soaps could be in large vats that you fill your own containers with.
Bread could be sold as is, but without the paper or plastic bag. Just put bare into shelves.
Produce could be sold mostly as is, but without the plastic and without the option to put it in a plastic bag from a roll.
Glass jar preserves could be sold as is, but with an expanded capacity for accepting glass jar returns from customers.
Meat could be sold from the butcher, only. Or ideally criminalized.
Candy could be in a wall of easy to open boxes and you use a scoop to put it in a paper bag.
It’s not hard to solve. It’s not even really hard to implement.
Soaps could be in large vats that you fill your own containers with.
Bread could be sold as is, but without the paper or plastic bag. Just put bare into shelves.
Produce could be sold mostly as is, but without the plastic and without the option to put it in a plastic bag from a roll.
Glass jar preserves could be sold as is, but with an expanded capacity for accepting glass jar returns from customers.
Meat could be sold from the butcher, only. Or ideally criminalized.
Candy could be in a wall of easy to open boxes and you use a scoop to put it in a paper bag.
It’s not hard to solve. It’s not even really hard to implement.