“Wait!” you might protest, “Wait! What happened to Rules 1 and 2? Is there a Rule Number 4?”
Never fear. Other rules exist. But they require research, time, thought. And some days you just want the frivolous cream, the cotton candy, the butter of life.
Rule #3: There is room in your cupboard for a silly set of something. If it matches, well enough. Or contrasts, well enough, to whatever else you use. If it comes with memories, or sentiment, or humor, all the better.