I bought these books from a lucky find on Ebay, but I haven't been able to find them again. They are journals in the style of 'Advanced Potion Making' and 'Standard Book of Spells.' They have the same cover art as the movies!
I used them on the 'Slytherin' table at my wedding, and they are awesome, but I am selling everything to pay off my wedding debt.
They are full auctions and both of them are at like $2 right now. So don't miss a chance to get something really cool for a great price. :) Thanks!
Standard Book of Spells: http://www.ebay.com/itm/321253209337
Advanced Potion Making: http://www.ebay.com/itm/321253208532