This is for people that I live with.
I don’t mean any lame team building exercises, but casual group activities. It could be something mundane like organizing a trip to the store together. Movie trips would also be fine as would showing something on the home projector, though I feel like there’d be more distractions and temptation at home.
If I was getting feedback that people felt like they didn’t have money to go out to the movies, I’d probably put down money to buy everyone popcorn and soda so they could go and get something nice there. I wouldn’t mind doing that once per month.