Wear a funny hat.
Yes, I said wear a funny hat. Connect it to a song, game, joke, anything! The kids will immediately brighten up, teachers will smile. (Sure they will think you are nuts but that doesn’t really matter because they already think that). Behaviour issues from outside the room are more likely to be left outside, you will be happier…everything is better!
In this case, the two dollar store is your friend. Or those little stalls in the centre of shopping centre aisles: you can pick up furry Australian animals or an occupation specific hat like a construction hat.
Here's my favourite:
Try it and let us know how it works out!