While some lights are designed to help you read a book, this Butterfly Lamp by Japanese design studio Vinta takes a page from a book's shape instead. It easily allows you to adjust how much light is in an area in a fluid way by opening or closing its two "wings." A dimmer switch would do the same thing, sure, but having two different light sources working off one another would provide some interesting room lighting.

The Butterfly Light is just a concept at this time, though quite an elegant one.

Vinta, via Elit Alice