My one friend loves books (who doesn't), and we both love all things fiction, so I decided to make something she could put books in, with a fiction theme. Originally I wanted the cover/protector to be A5 size, but as time passed... it wasn't. (Sorry for the bad images).
So I chose naby blue wool that I had with me and used a 4 mm crochet hook. I started with a sc row, followed by loads of dc rows until I thought it was about the size I wanted it to be.
I kept in mind that it was going to be folded double. I I added the little parts at the top and bottom so that it obtained the shape that a book cover would have. The end result looked like this:
I measured it around where one page would be to determine the length of zip I needed. I bought a white one 'cause I thought it would look nice with the navy blue wool.
I prepared the crocheted wool by tying in the ends before the zip was added, like this...
The zip was then added along the edges, with the crocheted area slightly overlapping the zip.
I just used a large needle and tied it using the same wool. (I did this very quickly, and a slightly OCD part of my mind is very upset that the stitch sizes aren't all the same.)
Then I added a water tribe symbol (from ATLA [Avatar: The Last Airbender]):
This is the original symbol:
An A4 sized book fit in perfectly.
In total, she can easily fit 2 of the last Harry Potter books next to each other into it.
It took me about... 24 hours. I worked Thursday from about 5/6 pm to 4/5 am, and Friday from 2 pm to 2 am. It needed to be finished by Saturday. The symbol took about half an hour to put on - I didn't put much detail into it.
I would love to make another one for myself and try to get the size right.