Activity Village has printable alphabets in all sorts of themes, from Easter to Quidditch.
You can open the Quidditch League in the Sorcerer's Stone.
During the second day of school, proceed to the Quidditch practice.
All are published by EA (Electronic Arts) and were released to correspond with the movie of the same name (with the exception of Quidditch World Cup).
In a radical departure from the style of the other four games, Quidditch World Cup focused on the fictional game of Quidditch, leaving spell casting and the traditional stories from the novels behind.