Haha I clicked on this to suggest Bunco. Are you sure they’d be open to something different? The magic of Bunco is that there’s no skill or strategy involved, and practically no rules to remember, so it’s more social than anything else.
If your crowd likes Bunco for that reason, I’d keep it simple:
https://www.reddit.com/r/AskReddit/comments/31b8ks/comment/cq04wz2/
If they like Bunco for the gambling aspect, you could do some simple gambling games with playing cards