[nights] Have an on-screen hat day. Also, have you tried the 'hold up something green if you agree' or 'hold up something red if you disagree' rapid-fire quizzy-type thing instead of relying on mentimeter or other electronic gizmotrickery?
[pen] Nope and that is absolutely happening in my next online thing.
In my last in-person thing, in the IT lab, I was practising using the software that allows me to look at the screens of my students from my desk. Not only does it nip any potential misuse of university facilities in the bud, but it allows me to send messages to all terminals in the session.
My favourite message I sent ended, for a lark, "Please stand up and sit down again briefly to acknowledge receipt of this message." Within moments, there was a gentle wave of students gently bobbing up and down. Absolutely splendid.
[pen][nights] Loving all this, only wish I had the wit to think of this stuff. As I teach music, perhaps I could declare that everyone must turn up with a sousaphone?