Contrary to popular belief, J K Rowling DID write one more Harry Potter book after Deathly Hallows. Don't ask mom to get a copy though, it's a bit more expensive than the rest!

In the seventh Harry Potter book, the author mentions a book within the story, titled "The Tales of Beedle the Bard", which Dumbledore leaves to Hermione.

In late 2007, Rowling completed a book also entitled The Tales of Beedle the Bard, with four wizard fairy tales found in the Harry Potter series, and one that doesn't! She wrote this as her "farewell" to the book series. Only seven copies of the book exist, all hand written and illustrated by Rowling herself! Each copy is leather-bound and decorated in silver and jewels. One copy of the book, the "moonstone edition", was auctioned off for nearly four MILLION dollars!!

Titles of the stories:
* "The Wizard and the Hopping Pot"
* "The Fountain of Fair Fortune"
* "The Warlock's Hairy Heart"
* "Babbitty Rabbitty and her Cackling Stump"
* "The Tale of the Three Brothers"

http://en.wikipedia.org/wiki/The_Tales_of_Beedle_the_Bard