In a general sense, I think two things about this suggestion are universally useful in solving the epidemic: structured activities with clear expectations, and people who take the initiative to design and execute them.

For those people who I'm personally trying to reach, those who sit at home alone all day, and you only see them on the way to the grocery store and back, who desperately want to interact with people but don't know how to begin, they need someone to initiate the interaction, and they need to know the rules of the interaction, since this is mainly the reason they don't feel comfortable with freeform interactions with strangers and so avoid them.

Thank you for helping me realize that.