Mathmos Light Charms silently alerts you of phone calls

Need to keep an eye on your phone calls, but you need people to believe your phone is off? This cute little Lava Lamp charm from Mathmos is the perfect thing for it.

Leaving your phone on vibrate still is sometimes too loud, since it leaves you with that obnoxious buzzing sound. Your boss or in my case professors don't usually like it if you have your cell on during work/class. However, from time to time you really need to know. The cute little Lava Lamp will start flashing to let you know you have a phone call.

I usually hate cellphone charms, but this is one that I can even appreciate. To get one of the charms it will only cost you $12.

mathomos light charms glow when you've got a call [via technabob]