In my state, use of mobile devices is prohibited while driving, unless you're using them in a hands-free mode. I've been doing that since it became a law but it was a bit of a pain sometimes because there was no good place to put my phone and it would slide around while I drove.
I looked around for a holder for mobile devices, but all the ones I found required drilling holes, sticking an adhesive disk on my dashboard, or sticking a suction cup to my window. I didn't want to damage my car's interior, and those ones that stick to the window block my view and fall off at inconvenient times.
Recently, I discovered a great solution for this problem: the Mountek nGroove Universal CD Slot Mount for Cell Phones and GPS Devices.
This is a well-built mount for your mobile devices, which fits in the CD slot in your car. There is an adjustable "gripper" that you expand to grab the inside of the CD slot to hold the mount in place. The device holder portion of the Mountek is adjustable to fit most mobile devices and hold them in place securely.
I've been using this mount for a couple of months and it is great. Not only does it keep my phone from sliding around, it also allows me to put my phone in a position where I can easily see the GPS guidance using Waze, Google Navigator, or other mapping software.
I don't use my CD player much in the car, but on the couple of occasions when I needed to, I just loosened the adjustment thumbscrew on the Mountek, took it off, added a CD, and remounted the Mountek.
I'm very happy with the Mountek nGroove Universal CD Slot Mount for Cell Phones and GPS Devices- it seems very sturdy, meets my requirements, and doesn't damage the interior of my car.