Challenge: Come up with a solution for the situations presented in the above photos that would either prevent people from leaving the garbage there or encourage them to do the right thing.
Solution: This problem could be solved by redesigning the garbage cans to be sloped at the top. For the first design, the one seen in the first two photos, the hole could be on top so that nothing can rest on the ledge above it, and the area surrounding the hole could be sloped. This way, since a slope would make them slide off, the box and the cup would not be able to rest on the ledge as they do in the photos and would have to be properly disposed of in another way. For the garbage can in the third photo with the stacked pizza boxes, the can could be redesigned so that there is not a flat top on it and instead make it downward sloping to the holes on both sides. This way, nothing can be placed on top; garbage can either be placed within the holes or be taken somewhere else.