Remember the 2 feel unit motors in the preflight check and the loud whirring noise they used to make in an otherwise silent flight deck? I could do a fantastic imitation of the loud hum they made after a couple of really deep breaths. It used to cause consternation when the switches were observed off, or when the tone changed as I ran out of puff.
And one of the first things you did when you walked on the flight deck was put the 10 switches (the 'top ten') inside the door on the left hand side on. What were they?