Hello Maria, Nice Idea. I agree that supermarkets should play a major role in your project. However, you have to expect that they will not be willing to help because it is important for the supermarket to sell as higher quantities as possible. So I suggest having a plan B, which is partnering with the legistlative organisations. Good luck!
I believe this is a very effective idea, and what makes it spread is its simplicity to apply wherever you are in the world. And it is one of the tools that helps children refugees to recover from the suffering and violence they have faced in their childhood and become leaders in their new communities.