Griffin's cabinet mount dock is probably not intended for holding an iPad permanently, but I like to imagine people will have one in the kitchen, the garage and even the bathroom. Stuff prising it out of the brackets every time you want to use it, right? Amirite?
The mount's arm rotates by 360-degrees, and the whole 'pad can move 90-degrees so it aligns flush under a cupboard, and then can be pulled out when in use. In the US it's $70, and in the UK it's £50, available now.