Here's something to think about: unless you use a headset on every single call you make, your cell phone is going to be spending a good amount of time scant centimeters from your mouth. And that means (eek!) germs accumulating on your phone, especially if you're a little under the weather yourself.
What to do? Violight has an answer: a cell phone sanitizer that uses a pair of ultraviolet lamps (powered by 3 AA batteries) to kill germs on your cellphone — up to 99% of the little buggers in 5 minutes, they promise. A pressure-activated switch inside the unit fires up the UV light as soon as your drop your phone in; there's also a clever basket for disinfecting earphones and other small devices. The unit will handle flat phones/PDA's up to 3" L x 0.75" W x 5" H (flip phones and sliders, by their very design, are not recommended).
So is it worth its US$49.95 MSRP? Honestly, without a way to test for germs before and after sterilization, we can't say for sure. However, Violight is an established company with a full range of germ-zapping products, so we'd tend to give them the benefit of the doubt. If cleanliness is important to you, you could do worse than checking this unit out.
Here's a video of our hands-on review: