One of my coworkers, during a meeting, just accidentally misgendered another coworker who's non-binary. They gently corrected the mistake and moved on, which was fine, but the manner of misgendering made me wonder how best he should've addressed them.
He was trying to give them a compliment on their new haircut. What he said was "Girl, you're rocking that look!"
They corrected him saying, "Not girl, 'they', but in response to your other question ..."
If they were a woman, "Girl!" would've been a culturally appropriate way to address them in this circumstance. If they were a man, "Dude!" might've been more appropriate. So, what's the appropriate (at least in the US) non-binary alternative in this circumstance? Obviously, he could've just used their name, which would've worked well enough, but doesn't quite carry the same weight as the gendered alternatives.