Check if your area has a Weed Warriors group/organization. They go around removing invasive plants that are smothering native plants. I find it fun and get a satisfaction of having done something nice while exercising.

If your area doesn’t have that, there’s most likely opportunities to volunteer with hiking trail maintenance at nearby state parks. Or just go hiking, start small and bring water!

You shouldn’t be able to smoke outside an ER anyway… People come through there with life threatening problems and need all the oxygen they can get