Turn your optical mouse into a crappy scanner
Sometimes hacking is less about improving your life and more about showing off your chops to the 1337 crowd. Such is the case with the optical mouse scanner hack, which uses the sensor inside the mouse to make a "ghetto b&w handscanner." Simply wiring the optical chip to a parallel port and installing the linked sofware allows you to patch together an absolutely terrible looking scan. Still, we can never get too harsh on any device repurposing, no matter how pointless and useless it is.
[Via Hack-A-Day]
