That's not what he's asking for. He wants multiple books open at the same time with easy access and in view, I suppose. Of course, you could have more kindles, like a bunch of the star trek [PADDs](http://en.memory-alpha.org/wiki/PADD) lying around on your desk, but the kindle is too expensive for that at the moment. And even then, when I am doing historical research or writing a conceptual piece on some scientific or technical topic, it is not uncommon to have ten to twenty books, articles, documents or artifacts open at the same time and it never fits on my desk comfortably. So I end up using multiple table-like areas on different heights alongside my desktop: a coffee table to the side of my chair, another chair in the corner, an open closet with shelves just below eye level, and so on.
A document "wheel" or carousel would help a lot.