I collect masks. I think they are beautiful, but I only collect masks with open mouths. I like the metaphor, of course: we hide behind them, we use them to become someone else, but for me, an open mouth means these masks demand to be "heard." They need to look as if they are ready to speak, or are speaking, or singing aloud for me to want to hang them on the wall. I like a mask that nobody shuts down.
Mask are symbolically important, and "we," meaning everybody, wears them at times. Teachers wear them, in lots of contexts. We wear them when we are with parents. There's a thing a veteran teacher taught me when I was starting out-- the "teacher head cock." It goes like this. When the parent of a particulary challenging kid asks how their student is doing, you cock your head a minute, and smile. This gives you a second to catch your breath and think before you blurt out something too blunt. In those occasions before I learned it, the non-professional, human side of me wanted to say something like, "Yo, come get your kid! He needs to spend waaaaaaayyyyy less time on an ipad or in front of a screen at home and waaaaayyyy more time outside running around, and then in your lap with a book!" But then I mastered the teacher head cock. So, I would cock my head, smile, and say something like, "Well...Johnny has a lot of wonderful energy that we are working on harnessing toward his goals."