Partner with Lowell Litter Krewe, Canalwater Cleaners, or other cleanup groups to establish a new regular cleanup at a specific location, perhaps Western Canal in the Acre. Do projects that help to clean the Earth. Signs are added to the location to discourage littering at that location. At the end of the season, put up a sign or installation that shows how much trash was removed from the ground during the season to encourage people not to litter as it piles up.
It would help to keep Lowell clean and support the environment globally.