Music groups such as amateur orchestras, brass bands etc are still a bit of community. Admittedly quite niche, you need to know about them, find a way and have the ability to learn an instrument. There are informal ad-hoc communities e:g at my local leisure centre the regular swimmers chat to each other quite a lot. Kept a lot of people going mentally through lockdown I think. (swimming was allowed subject to restricted numbers and booking ahead)
