Buying a diary there are many things you can do to make it more inspirational for your writings :) Using Photos, drawings, decorative paper and stickers you can style a bland cover your own way, and make inspirational headlines according to your hobbies, work and interests.
Also drawings, pictures, paper and stickers can easily be crafted
inside your notebook/diary.
This is how my diary looks so far. I've decorated it on the outside, and made some headlines inside.