iSimple - StrongHold Headrest Mount for Most 7" - 10.2" Tablets - Black - $36.99 - 4 stars
With adjustable arms and headrest clamps, this iSimple StrongHold ISSH6501 mount makes it simple to secure a 7" - 10.2" tablet to a 2-post headrest for hands-free viewing. The friction-lock swivel lets you switch between portrait and landscape viewing.