A Guatemalan NGO that build all kinds of whacky devices from bicycles including water pumps, blenders, nut shellers, mill / corn threshers. Incredible stuff.
Outrageously expensive bicycle powered juice blenders. From $250 or so for a small unit to $1900 for a custom purposed bike with a blender's motor replaced by a bolt onto the wheel.
Step by step instructions on how to create a simple bike powered blender. Instructions are really simple, make a little wheel that contacts the tyre with a long bolt that goes into the base of the blender and replaces the motor. Simple and easy. :-)