lampadina.

The Lampadina is a simple, elegant light that deserves a simple, elegant description. The base is an aluminum audio tape reel that works as both a cord wrap and (via the holes) a wall mount. The base is fitted with a basic bulb socket that comes in black, purple or orange. Topping it all off is an oversized bulb with a round, frosted patch to reduce glare. The pieces work together to create a design that's both dramatic and understated.

details.
The Lampadina was designed by Achille Castiglioni and runs about $75. There is a nice tribute page to Castiglioni here that includes this amazing rotary phone prototype.