For years I hosted a Tuesday night potluck for a lot of neighbors. It worked out well for the most part but started getting a little more difficult to have on a school night as my kids got older.
I had it in the restaurant on the ranch next door as it was closed on Tuesdays. We started getting several freeloaders like one little chubby lady that would bring a warmed over can of corn or something and a huge bag of empty to-go dishes and load up on a weeks worth of dinners to take home. It faded away most of the time during the holidays when people got so busy, shopping and social.
When I restarted it after that ranch changed hands, I had it at my house and invitation only. (This way I could leave out the freeloaders) This also gave me incentive to clean my house at least once a week.
We also used to host huge fish fry once or twice a year.
I am looking forward to going back to the social stuff after I really
spring clean here. And get a new carpet or two. And that sort of thing.