I like: Barnacle iPhone stand | 好的产品设计 Barnacle iPhone stand

If like me you use your iPhone as a GPS navigation device occasionally Barnacle will be a boon. Rather than allowing your phone to slide around the front dash like a greasy pig, or spend a fortune on a bespoke holder that will be out of date when Apple tweaks their phone design next, there is now an alternative.
barnacle
Like most great products, the design is absurdly simple in its execution. Two suction cups angled to to allow it to work as a desktop stand or attach your phone to a windscreen.