I'm feeling like maybe I should write something on: how to start a community. You start with you and one friend trying to live near enough to each other that you can walk to each other's houses. You host a regular meal for other friends who live nearby, at home or somewhere local and cheap.
Communities also obviously have the effect of making us happier. Whereas so much climate praxis seems to be about things you can give up and ways you can make yourself more miserable.