For anyone who loves books, there is always a quandary: how to store them efficiently. The other thing is that most book collections will expand over the years. This makes you add bookcases, usually from different manufacturers, making your living room and home theater room probably a little more cluttered that you'd like. REK is a technological piece of furniture, and it reminds us a lot of our favorite puzzle game, Tetris.

REK was created by Rotterdam-based designer Reinier de Jong and starts off completely folded. It's uncanny how small a shape this bookcase folds into. As you want to store more books, the bookcase can unfold, adding storage and shelving space as needed.

REK consists of five parts, which can slide out to accommodate more books. REK actually grows with your book collection. The zigzag shaped parts slide in and out of each other, providing a flexible amount of shelving space, depending on the needs of the user. What's great with REK is that you won't have any half empty bookshelves anymore. REK will always look full. There are also different sized shapes, allowing you to store books of different sizes.

We thought that REK is a great idea. Bookcases are always a problem. Sometimes you don't have enough space, sometimes you need more. The needs vary and REK is a good way of filling up those needs efficiently. Plus, the superb design is really great. This means that REK can be used to store, DVDs, CDs, and other media very nicely. The zigzag design attracts the eye naturally, with its almost fractal-like patterns. You also get the joy of playing with furniture pieces, that somehow remind us of Tetris. [via Dezeen]

MORE SHELVES
Using Sidetables as Shelves
Stacked Ikea Shelves