Hanging crates on the wall creates extra storage with a rustic flare. The best place to look for these crates, in my opinion, is the flea market or any second hand shop (including Goodwill). When placed in retail stores, these crates can be $45+.
Instead of using wooden crates you can also use wicker baskets. Hanging wicker baskets is quite easy and provides extra storage in small spaces.
Using a wire basket instead of a wicker basket or wooden crate allows more storage/display room for books and magazines. The wire baskets give a rustic look, but would also look great in a modern home.