The guys over at Snijlab (website is Dutch) have come up with some incredible designs made from laser cut sheets of birch ply wood. Among them is this A7 note pad cover.
The hinge is made by lots of fine laser cuts which allow the wood to be bent over on itself – insert a replaceable note pad and there you have it! Check out there blog post about the notepad design here. You can buy them via their website too.