Over the summer, I got a big thing of sheet protectors for $5 (normally $14.99) and I recently used my Staples Rewards to pick up some binders for free. I had a mission and I finally "did it".
These were all of our Lego books that have been lying around and all different places.
Here are our Lego books all nice and neat - in page protectors and fill up 2 3" binders.
Now, if I can just find a good way to organize the actual Legos, we'll be all set.