Printer salvage can be used for more than the joy of taking the printer apart. For example, you can get capacitors, resistors, voltage regulators, transistors, inductors, gear mechanisms, laser tubes, lenses, various rollers, wires, springs, hardware, microswitches, relays, motors and more!!! With all those parts, you can probably build a cool looking robot with about 1 printer.
makezine.com/32/printersalvage has a more complete story.
The Robot Group