I never understood classic parties. It always seems to me that people end up having fun in spite of the context usually with looseness driven by alcohol.
By contrast if you just go do something you enjoy then you already have a commonality and even if you find the company boring, you're there to do something you like.
So - chess or sports, watching something (sport, plays, whatever), charity work, interest clubs (you can find local clubs for just about every interest online), events like local music / poetry/performance stuff, art shows, and all so on endlessly.
The ones that are inherently group based like chess or clubs guarantee interaction without the awkwardness of socializing with less 'context.'
It's a commonly occurring molecule that gets you drunk, bound to be "discovered" then easily recreated by all groups of humans. "developed" reads like it was independently invented.
By contrast if you just go do something you enjoy then you already have a commonality and even if you find the company boring, you're there to do something you like.
So - chess or sports, watching something (sport, plays, whatever), charity work, interest clubs (you can find local clubs for just about every interest online), events like local music / poetry/performance stuff, art shows, and all so on endlessly.
The ones that are inherently group based like chess or clubs guarantee interaction without the awkwardness of socializing with less 'context.'