I just picked up the GripGo phone mount at Walgreens for $11 (in the As-Seen-On-TV aisle). This is the best phone mount I've ever used in a vehicle. No adjusting little arms that hold your phone, no carefully guiding the phone into a precision cut slot. Just place your phone on the GripGo pad, and go!
Here are a few shots:
It swivels:
And holds an iPad:
Here are a few shots:
It swivels:
And holds an iPad: