I’m not sure exactly how good this actually works but I love the idea of no wires or batteries (or eyesores).
MegaPhone – SATELLITE 2011
Amplifier passive ceramic iphone. The form is designed to amplify and optimize the best sound output. The amplifier is based on a thin wooden structure that allows the object to float off the table. This is to increase the vibration of the object being used and to optimize the emission of sound. Designed for the iPhone is perfect for listening to music without headphones, for audio conference to hear the person on the phone as if he were talking in the same room.