What do you do with an odd wall? I created an odd bookshelf.

I started out with graph paper so I could make the best use of the limited 8 inch plywood strips that I had left over from my desktop.  Then I cut the boards and painted them.  Now they are on the wall and I love them.  The angles of the horizontal pieces makes it so I don't have to use bookends.  I do have to finish painting the wall and have decided to also paint the little door at the bottom corner of the wall.  This is a cubby-window that is only about 5 foot wide and not really usable space.