[SSLy]

Pub quiz meetings, art galleries, film festivals.

[vundercind]

Literally pick any half-organized activity. They’ll be posted all over the Web (sorry, you will probably need a Facebook account), your city’s website may have lists of organizations, and there are probably some fliers posted at the library (and the library may run a few gatherings themselves!)

[bubblic]

Those are so important! I often struggle to suggest activities other than sports

[disambiguation]

Piggy backing to add - running clubs, book clubs, board game clubs, church if you're religious.