For community sufficiently, groups like Buy Nothing and Everything is Free might be a small piece but they're a great place to start. They've been a wonderful way to shuffle resources to those who need them/can use them, and to build support networks within our community. I've met a bunch of my neighbors, made friends, and leaned on specializations and career experience from people in the group on various projects. I talk about them a lot over on the zerowaste and diy communities.