I am constantly seeing cool notebooks in every design imaginable and if I were to buy every one that caught my eye, I would probably fill my home. Most of the ones I do buy sit on a shelf untouched. These days, when I actually need a notebook, I buy a simple and inexpensive one and create my own cover. They are more fun and more likely to actually be used.
Book of Dreams is one example
Bella Crafts Quarterly, a free eMagazine, is featuring a step-by-step tutorial showing how I made this book cover. Check out the issue, and have a look at all their past issues as well, on their website.