This bookshelf design from the Berlin-based design duo Farsen-Scoellhammer is akin to finding an extra closet in your home. The shelves are fitted with an additional board that allows the structure to stretch into a V-shaped shelf bursting with your book collection...
The more books you add to the Platzhadler Expandable Bookshelves
, the more the shelf expands until it reaches its physical limit. Via: notcot.org