we use workboxes.
Using stacking drawers/bins from Hobby Lobby bought using my 40% off coupon of course!
Above is my built-in workbox from our home remodel. This space was two large windows in our dining room. Our contractor thought I was crazy when I ask him to do this, until he saw how many books we had! lol. Once he finished it and I had all the books and the drawers up there, he was pretty impressed by my idea.