When we think of the BlackBerry PlayBook, we don't really think "above and beyond" for the most part. We see the tablet, maybe an HDMI cable running to an external display, but that's about it. But what about using external hardware components to do some really cool stuff? That's just what the guys at The Astonishing Tribe have done with some fun stuff from Arduino (Arduino is essentially an open source electronics platform). They've pieced together a sweet infrared scanner that works flawlessy with a sonar-like PlayBook application. The fun implementation here is protecting the fridge from milk thieves, but just imagine what can be done with some hardware and a great app. Check out the video above to see it in action, then hit the link below for more info.