blubbey :
Do you have any ideas? Maybe a banana phone? Perhaps a sphere? Hell while we're at it lets make an Eiffel tower phone. A double helix!? Wait no, I've got it. A DOUGHNUT PHONE!
How about a small object I keep available, on a wrist or pinned to my clothes? Using sound holography, it presents the sound to my ears without my having to hold it there, but keeps others around me from hearing it.
Of course, it's from Star Trek. Come to think of it, they invented the flip-phone, too.