Did you see this news story? Air bags for the iPad?
First off, Apple has come up with a solution for keeping the glass on the back of your iDevice from breaking in the event of a fall. Obviously, the simplest solution would be to avoid glass screens altogether, but if glass is going to stay, it should be made more resilient.
Apple dreamed up a tunable shock mount that would sit between the glass and the body of the device. This shock mount would inflate when the device’s accelerometer senses that the phone or tablet is falling. An actuator within the device would suck in the cover glass as it accelerates toward earth, protecting it from damage. This technology could also be used to provide a water-tight seal.