Remember people's names!
Dude was just here to put in an announcement for his business and his wedding. He only heard my name in passing, but when he spoke to me, he used it, made eye contact, sounded sincere, and said thank you. I almost blushed. He was cute.
But the important thing here is that he treated me like I was a person, and like I was worthy of the time it took to remember my name and speak to me that way.
Good for him!