Frisbee golf. It’s cheap, fun but challenging, and outdoors. Worst case scenario, you go on a long walk and bump into some interesting people. If you’re in a medium sized city or larger, there is probably a course and league near you.
The culture is generally very polite and fun to be around. Lots of harmless stoners and 30yo bearded people with beers in hand. In the south there is starting to be some influence from megachurches using it as an enticement, so I’m not sure if it’s “cleaned up” a little more down there.