Sure, stereotypical hippie communes pretty much are left-anarchist societies that fall apart as soon as someone has a different idea of how to live properly because their systems aren't based on individual rights and voluntary association but on compulsive collective action which, in turn, cannot be enforced.
Monasteries tend to have rather rigid rules which are enforced via ostracism but membership is voluntary, so I guess it is in fact an example of working stateless collectivism, if you're into the whole Jesus thing of course 😄
And I agree, even though I consider myself to be an an-cap, I find a minarchist state to be infinitely preferrable compared to the systems in place at the moment, and much easier to sell to regular people who feel that the state should at the very least act as a "night watchman".