Something a little different for me. I found a lot of examples on the web but they all seemed small (6x4 seemed the most popular).
This is a prototype design for a wood cover sketch book using standard size 11x8.5 32lbs 100% cotton paper. It uses wooden hinges and screw rivets as the binding. I added the leather to soften the feel and look of the book.
The good: It works. The hinges allow the book to open 180 degrees. The screw rivets allow paper to be swapped when the pages are all drawn on.
The bad: Needs to be a bit bigger. Next prototype I'll shift the hinges further out to the edge. The binding location needs to be changed. The paper stands up a bit too much so next time I'll attach it to the back cover so it lays flat.