Losing your phone can be a nightmare. With ZOMM, never lose or misplace your phone again. When activated, your ZOMM alerts you anytime your phone is more than 30 feet away. Using Bluetooth technology, ZOMM will vibrate, flash and sound an alarm letting you know that you are leaving your phone behind. No more leaving your phone on airplanes, in taxicabs, restaurants or movie theaters.
via www.zomm.com
I've misplaced my cell phone more than once. This little device would have saved me hours of "hunting" while I continually call myself and then try to figure out where the ringing sound is coming from.