In Brazil, there's something called "mutirão" which loosely translates to "a bunch of people getting together to help build something for a specific person in n

In Brazil, there's something called "mutirão" which loosely translates to "a bunch of people getting together to help build something for a specific person in need". For example, someone in the neighborhood needs a second story on their home (many homes are multi-generational) and so this person or family gets the needed supplies then rallies other people in the neighborhood to help build the second story. It works because at some point, those very others will likely need collective help with something of their own. In the case of a social project, the neighbors might informally crowdfund it, then build whatever it is together. Regardless, the one in need usually offers a BBQ and drinks in exchange for the work.