The Mad Hatter is a character from Alice's Adventures in Wonderland. He wore a top hat with a price tag on the front. That tag has 10/6 written on it. This means it costs ten shillings and six pence. Hence, the date October 6 was picked.
It is fun to wear a silly hat and read some hat stories with young children.
Here is a list of hat stories:Henri's Hats
HatHat
