The Delkin Devices Fat Gecko Stealth Suction Mount allows you to attach a GoPro action camera to nearly any smooth, solid surface. It features a low profile design that can support up to 4 lb of weight. The mount has a tilting head and can rotate 180° allowing you to set up your shot exactly as needed.
In addition to GoPro's, you can use the Fat Gecko Stealth for regular cameras too. Detaching the GoPro adapter reveals a standard 1/4"-20 screw which will let you attach just about any photo or video camera weighing 4 lb or less.