Color Wheel: Creating a gradient effect — light to dark or vice versa — can create a focal point in any room.
Horizontal Stacking: This method is a great way to use vertical space and — bonus — you don’t need to purchase any shelving.
Organizing by Color: A close cousin to organizing by color, sequences are a fun way to create eye candy by playing with patterns and sections of hues — it’s like colorblocking for your books.
Horizontal and Vertical Stacking: If you’re struggling with space issues in a minuscule pad, a great way to be efficient is to mix horizontal-and-vertical-stacking methods. The trick here is to place a horizontal stack on top of a row of books that are similar in height. Not only does it make use of every possible angle, it also looks visually awesome!
Nooks And Crannies: If you’ve never actually opened your flue, you may want to consider taking advantage of that space below the mantle.
Creative Clutter: If this picture is making you break out in hives, look away. But if the inner collector inside you is jumping up and down, this might be the organizing style for you. We love mixing in meaningful bric-a-brac to give our bookshelf a more personal, lived-in look.
Source: Refinery 29