In The Netherlands we had a Packaging Tax for supermarkets for a while (it has been repealed after a short time, because of resistance and lobbying). I liked t

In The Netherlands we had a Packaging Tax for supermarkets for a while (it has been repealed after a short time, because of resistance and lobbying). I liked the idea, except there was a problem (IMHO) in how it was implemented, because there was no requirement to show the tax amount that was charged to the consumer on their receipt. If your receipt would say e.g. 'Groceries $30.00, Plastic tax: $2.05' then a consumer would have a real incentive to lower the amount of tax by choosing better packaging with less plastic.