We have introduced several practical mount systems for iPad, but if you need an ultra thin option, the following MagBak iPad mount may be more suitable for you.
The MagBak is the world’s thinnest mount designed for iPad 4, iPad 3 and iPad 2. As we can see from the images, the iPad mount features simple and ultra-thin design, when attached to the back of your iPad the mount system allows you to mount your iPad to most metal surfaces, while using included metal O-Ring you can also mount your device to non-metal surfaces. Moreover, the iPad mount also features silicone texture for comfortable grip experience, and the iPad mount raises your iPad just enough to keep the back protected. Apart from that, the iPad mount also works well with Apple Smart Cover.
At present the inventor of MagBak is raising fund at Kickstarter. Pledging $24 will let you own the iPad mount. If you’re interested, jump to Kickstarter official site for more details.