Different locations have different ways of collecting trash. Products are often made of different materials that can be trashed separately. With a modern digital product it could be possible to improve the quality of such a big yet overlooked part of our daily life, that could lead to a better, cleaner world for everyone.
It's still a raw idea that needs shaping, but if you, like me, would like to have a direct impact on one of the most important problems of our time, it could be worth a discussion