Wanted: A Silent Alarm Clock
1. A cross between an alarm clock and a hearing aid or perhaps bluetooth earpiece. The latter would be easy enough to do--just set the alarm on your cell phone. But I'm not sure any of those would be comfortable to wear while sleeping.
2. A vibrating alarm. That's the standard solution for silent ringing on a cell phone. Could one make, or has someone made, a ring or bracelet or something similar that is comfortable enough to wear while sleeping and functions as a vibrating alarm?
3. The low tech solution—something sound muffling worn by the one who doesn't want to be woken up by the alarm.
Other ideas? Actual things out there?