We have a Microsoft Perceptive Pixel in one of our conference rooms that was collecting dust so we brainstormed ways to get more use out of it. Ultimately, we never got to build it out due to other work priorities but it was a lot of fun coming up with crazy ideas such as: at the end of the work day, it recognizes your face and asks the user, "headed home?" and if the user says, "yes" it pulls up traffic time to get to their house. Or even, it recognizes the user as they walk into the office and plays their all time favorite song to get them pumped up for a new day at work.
Wireframe, mockup, and final product.