Pratt Institute student Aaron Mickelson examines packaging design for ways to eliminate waste as part of his Masters Thesis Project ‘The Disappearing Package‘. He takes a product and then based on its use case, creates packaging that becomes the product itself, like soap packaging that dissolves in the shower, a container of Tide pods made from the pods themselves, and trash bags that create their own dispenser without cardboard packaging.
This is the sort of development that you hope to see for packaging waste to be eradicated. Especially in developing countries where small portions individually packaged are important for households (they can't necessarily afford the initial outlay to buy in bulk).
The Disappearing Package: http://disappearingpackage.com/