Community Bulletin Boards/Event Calendars

I'm trying to figure out good places to post flyers/event info that isn't just FB/Instagram and Do502.

Does anyone know of good Louisville area event calendars online, and also where there are good PHYSICAL locations to post flyers? I try to hit up the coffee shops, and UofL campus buildings, but are there any other good third spaces/spots where lots of people congregate that has a community bulletin board where anyone can hang flyers?