One Instructables designer merges sound with shape as she creates some pretty cool looking pieces of jewelry. Basically she creates pieces which take the waveforms of sounds when a person says that word. An example would be the earrings and necklace you will see in the photo below. The earrings are the waveforms that appear when the word 'earring' is spoken, and the necklace the waveforms for 'necklace'. The idea could really be expanded upon. Imagine an engagement ring which represents the waveforms of the word 'marriage', etc. More details on her work can be found here: http://3dprint.com/13262/3d-printed-audio-jewelry