I really like to use the phrase "ladies and gentlemen" while teaching. The reason is not necessarily to be formal, but to gather the attention to a particular point.
For instance, I'd occasionally say "this algorithm, ladies and gentlemen, was only discovered 30 years ago" in order to stress the fact that although the algorithm I am mentioning seems very trivial, people were not able to discover such a way until 30 years ago.
I choose this phrase to occasionally address the students simply because I find it interesting as opposed to "guys" or "folks," both of which are daily language. Also, I came to a realization that these kind of phrases really stimulate the listeners to pay attention even if they lost concentration.
Considering that this phrase might be perceived as a generalization of a group of people, that is there are no non-binary people in the audience, I would like to replace it with a similar toned phrase. Are there any phrases that you know or heard, and think that sounds as cool?
I understand that the question seems off-topic. Please let me clarify. The reason that I am asking this question in Academia.SE is because the phrase I am using considers academic environment, not daily language or some arbitrary presentation. Thus, the potential replacement should be suitable for a classroom. This is why I find it more proper to ask the question here rather than a community where academics are not overwhelmingly populated.