Apartment Therapy Unplugged | SparkFun Electronics Port-O-Rotary Phone

You have to love retro in order to shell out the $250 for this phone. But, the fact that each rotary phone is modified to work with your cell phone's SIM card make this phone extra cool.

If you find yourself long for the days where you sat at your desk waiting for your phone's characteristic "ring ring," this is the phone for you. You just need to slide in your cell phone's SIM, and it will work as your cell phone, allowing you to make and receive calls (and using your minutes It has the whole shebang, including working rotary dial, and a dial tone and when you place a call. This fun little mod is also available in black for $200.