Here is another desktop stand that lets you capture overhead videos and photos with your smartphone and mirorrless camera. The Arkon Clamp Overhead Stand (DSLRTABMG5) can hold phones from 3.9″ inches wide. It can be used on most desks to let you record higher quality overhead and front-facing videos.
The Clamp Stand can also be used with the Slim-Grip Universal Tablet Holder to accommodate tablets from 7 to 18.4 inches. It can extend from 18.25 to 29.5″ from the base.[where to get it]