I thought covidcoffeecorner was still going, but apparently they closed up in June of last year. It seems like the kind of thing that people could do regularly, and maybe as the in-between for challenges and chats. Perhaps having some sort of official imprimatur would help, but the hardest thing about places like that is keeping up with all the posting that has to happen to get the interaction. It could be done, in site, but I don't know how many people could do a Snowflake-equivalent every month.