Want to know how many messages are waiting for you on your cell phone? How much battery life you have left? Watch for Shoogle:
Shoogle is a novel, intuitive interface for sensing data within a mobile device, such as presence and properties of text messages or remaining resources. It is based around active exploration: devices are shaken, revealing the contents rattling around “inside”.
By using the speaker and vibrator on cell phones, you shake the phone and can be alerted to how many messages are waiting for you by hearing balls move around. The more balls, the more messages. You can even identify specific types of balls, e.g., metallic or wooden, with specific senders. You can also shake it to hear water sloshing. The more water you hear, the higher your battery life.