My sister loves Doctor Who so I made her a 'River Song's Diary' for Christmas.
I saw lots of peoples attempts on the internet, but this is how I decided to make mine.
I started by removing the covers of an A5 sketchbook, bought from The Works.
I cut out the Tardis squares from card and glued them to the covers.
I covered the card with sticky-back blue material and used a hair grip to push it in the grooves and bring out the detail.
I used a craft knife to uncover the holes in the covers and then I put them back on the wire spiral to reassemble the book.
Some people then distress their book to match the original one from the show, but I figure that'll happen over time.
My sister loved it, and she assumed I'd bought it, she thought it was that good.