We've shown you a couple of methods for creating a hollowed out book stash before, but it's not too often that somebody takes the time to document their own effort on video. It turns out there's a reason for that; it takes about 15 hours of hard, paper-cut-laden labor to build one out of a larger book, which is what you'd need to store anything more substantial than a couple of CDs.

The Ultimate Instructional Video for Turning a Book into a Secret Stash

Making a Book Safe | YouTube via Instructables