Just realised that “do’s and don’ts” poses and even greater apostrophecation problems than “mind your p’s and q’s.” Vice goes with “DOs and DON’Ts” which is actually a pretty good solution, but obviously isn’t always possible…
Do’s and Don’t’s Dos and Don’ts Do’s and Don’ts
I think prefer the last. It’s got consistency problems, but it doesn’t have the aesthetic and clarity problems of the first two.