Hand writing excercise books.
Pens you dipped into an inkwell.
Being taught that some words end in 'ise' not 'ize', except prize, of course.
How to use an apostrophe.
Doing sums in your head.
Things that went 'BANG' in science classes.
Hands slapped with a ruler.
Chalk thrown. (Usually quite accurately.)
Morning playtime with a bottle of milk or orange juice.