I guess I sometimes do things for me in the classroom (they make me giggle or smile or whatnot), and I don't know that the kids start to expect or look forward to these things, too. Most always (always?) I stand at the door at the end of class and say, "bye tall people; bye short people; bye weird people; bye normal people; bye giggly people.... and whatever else pops into my head when I see my various students walking out.
Well, today I was feeling kind of sick and didn't feel like using my voice much, and I didn't do this. I overhear one student after she's out the door, "hey, I miss her saying, "bye so-and-so people ...."". That made me smile.