Oh Steve, I'm glad I'm not the only one!
When I was teaching in the eighties,I used to encourage my bottom maths set (a dozen naughty and disinterested 8yr old boys) by promising to play I'm A Pink Toothbrush if anyone got ten out of ten in the mental arithmetic quiz at the end of the lesson. You'd think they were getting a ten pound note, and nearly burst themselves trying to do their sums. If someone was successful, I'd put the tape on, and they sat there enchanted. I doubt if today's youngsters would be so delighted by Max Bygraves, but maybe I'm wrong?
I remember sobbing my heart out at Scarlet Ribbons when I was about six!