Favorite book you own
(Not favourite over all book) I would have to say that it is this super fancily bound copy of the Grimm Fairytales I bought in Florida last year. It's gorgeous. I love it. It may be the most beautiful book I've ever seen. I'm hoping to get the Hans Christian Anderson one this year!
Probably my copy of The Fault in our Stars because John Green signed it and that's super cool.
OR maybe I'll change my answer to any of the books that I have signed because signed books are super cool I want all of them.