In our place, the trashcan is not a good solution. Although it should be provided.
I think the enabling solution in our place is to create creative ideas such as special training on how to treat waste in the beaches into a promising business bubble. By itself, trash on the beach will be hunted by the community.

create a post an get sponsorship

A brilliant idea, Hope someone will read your idea and will make a post for coastal waste management in Aceh.