Steve Tobak may be onto something with his prediction for. In fact, some existing models are so small that they may lodge themselves permanently in the ear canal as an unintended consequence.
The updated Argard M10 headset--or earset, more accurately--weighs just 5 grams and, depending one's aural anatomy, would seem to be a good candidate. The latest version looks less shiny than , perhaps to avoid being mistaken for a piece of jewelry.
It also comes with a "stylish docking station," according to GeekAlerts, which resembles a pair of tweezers. That could also come in handy as a tool to press the tiny buttons on the device or perhaps help dislodge it in an emergency.