A work party and some board games
My friend’s brother had a work party at his house last weekend, and he wanted to play board games. So my friend invited me and another guy as reinforcements to teach some games to about 20 people who don’t board game at all.
I loaded up my Big Frakkin Bag (it literally says that; it’s a Battlestar Galactica promo bag from the mid-2000s) with all sorts of party games and shorter games. My board-game friends did the same. We had no idea what people wanted and figured that it didn’t hurt having a lot of game options.