Ralph Berner(former top MTB World Cup racer) and his brother Timo have made a name for themselves in cyclocross here in Germany both through racing and product design. They design and offer carbon cross frames, but also have an interesting line of side products in addition. Some of these products include aftermarket carbon pulley cages for derailuers that they will install, and even have an 'areo' version for the road. They also have cross brakes, touted as the lightest on the market, but one of the neat little trinkets I found was this carbon cable hangar.
the Berner Cable Hangar neatly goes between your spacer stack and headset
What is cool about this part is not that it is carbon, but rather how it works. The carbon plate flexes under braking aiding in preventing fork stutter, you know that sometimes violent shudder under heavy braking? One German magazine tested the hangar and reported that it increases braking power. While I believ with properly tuned brakes you can have both power and no fork-shudder, this is still a neat little part. It is light weight and looks trick.
Cable goes into a stainless steel cable stop.
More info available at: http://berner-bikes.com/