when i moved, i got boxes for my books from....wait for it...bookstores! hehe. borders downtown (which was on my way home every day) put out book and magazine boxes every night - flattened and taped in bundles - on the washington street side of their plaza (across from the old south meeting house). down the way, strawberries, or whatever it's called now, also put out empty boxes almost every night which were great for cds.

so, if you're still needing book boxes, i totally agree to check out your local bookstore like others have said.