Attach your cell phone or other device to most surfaces with this Scosche MagicMount MAGFMI mount, which features large and small plates with 3M adhesive for flexible compatibility. Neodymium magnets hold your device securely without causing damage.
Since I use my phone as a GPS, having it where it is secure and visible is very important. This set up is great, my phone doesn't fall off and stays where I can see it. A great idea!