IKEA Billy is a bookcase with adjustable shelves that can be arranged according to your needs. A simple unit can be enough storage for a limited space or the foundation for a larger storage solution if your needs change. Simplicity always lacks some personalization and originality, so let’s hack one! If you think that painting or attaching some colorful paper is all you can do with Billy, you are wrong. If you have at least some wood-working skills, you can turn your Billy into a dresser, a sideboard, a kitchen island or even a geometric buffet! Read the tutorials below and spruce up your Billy in the most original way.
Getting a built-in library look with Billy bookcases is possible. Perfect for a home office! (via southernrevivals).
Playroom built-in for $300 including IKEA Billy bookcases, trim molding and other stuff (via https:).