craftgrrl | Book-weights

So... I've gotten back into the habit of reading. I'm not sure if it's because of the cooler weather or the fact that I just need to get off of the computer sometimes. But in any case, I'd like a book weight - some way to hold open books while I either read or take notes from them. Usually text books stay open, but other books just won't lay flat.

Does anyone have any really good solutions to keep hard backs (or paperbacks for that matter) open without completely ruining them?

I considered trying to construct one of those leather types you see sold in book stores... with like felt and rocks. But I want something that looks half decent. :o)