Truth be told, turning a book into a discrete hiding place is one of the oldest and easiest do-it-yourself projects out there, since all you need is an eligible book, a knife, and a bit of time.
But that’s a crude solution.
Instead, point your credit card at ThinkGeek and pick up their new Book Vault, a more commercial professional version of the age old trick.
Two hardcover books are glued together, hollowed out, and fitted with a plastic storage cavity that measures 6.5″x4″x3″.
The only downside (apart from the $34.99 price tag) is that the two hardcover books will be randomly selected, which could foil the idea of discretion. After all, a couple hardcover Jane Austin novels will stand out more next to Haskell: The Craft of Functional Programming and Lambda-Calculus and Combinators on your bookshelf than leaving your iPhone on a neon piece of paper on your coffee table.
Pick one up now at ThinkGeek (search for “Book Vault”).