Do you have some old (fruit or milk) crates? Or you just need a practical (and low budget) storage (organizing) system? Try out this brilliant woodworking idea: the crate bookshelf! You can combine the crates in any shape that fits .
This book cover shows excellent figure ground/negative space. The contours formed by the position of the fox serve as the shape of a boy, I'm assuming "Peter." This empty space also creates a wonderful focal point for the book title to nestle into.