Another interesting thing to think about is the method of transportation to the third place. Third Places should be reachable by universal transport (walking, biking, public transportation, etc), in doing so, one is able to see others in transit, and be seen in transit.
This allows you to see who's in the neighborhood, see storefronts, view/monitor public spaces, etc. This feeds into an observation of communal spaces. Maybe there's a pothole, damaged stop sign, graffiti, newly planted flowers, etc. Stopping to smell the roses isn't just to appreciate beauty (cont)
It's an opportunity to observe reality as it is. Come across some litter, so you pick it up and put in a garbage can that's a few steps away. Get to know the faces of people living on the streets. Learn their names, learn their stories. Empathize and show them compassion. This can feed into action.
Bring up any issues to town council meetings, or write letters to political representatives in government. Establish a resident community association, include EVERYONE in the community. All because you are going to a Third Place within walking distance of your home.