Okay, I'm a newbie, so I get to make a POV and be happy about it. This one uses the Memsic 2125 accelerometer (from Radio Shack) to light up the POV only when it's moving in one direction. Thus you can shake it back and forth quickly and it'll re-write the message in the same area of space making it easier to see and use. It's a totally unoriginal idea, but I didn't see another one out there using the Radio Shack accelerometer so I figured it was worth posting. If you're interested you can check it out here.