A network of shops which could use and reuse a standardised food packaging. That way, when a person gets takeaway food, s/he can return it to the nearest shop who is part of the network, and the package gets cleaned and reused. It makes consumers' lives easier as it does not require people to return it to a specific location.
A system of stickers in the shop entrance will make recognition of participant shops easy for customers. A system of redistribution of excedent packages from each shop will also be in place to ensure good logistics.