My airplane seat back has a tablet holder : r/mildlyinteresting
Turn Your iPad Into an Airplane Seat-Back Video Screen Using 2 Cents' Worth of Materials — Andrew Hearst — Content Strategist, Experience Designer & Digital Consultant, Brooklyn, New York
Airplane Seat Mount For Mobile Devices
The Airhook - Ultimate Travel Gadget For Airline and Vehicle Comfort
Amazon.com: MYGOFLIGHT Flex Suction Cup Articulated Arm Sport Mount and iPad Mini 4/5 Polycarbonate Pilot Kneeboard and Everyday Case Kit for Airplane Helicopter Car RV Truck Boat Windshield and Dash Mounting :
Pilot's guide to mounting the iPad in the cockpit : iPad Pilot News
MyGoFlight Suction Cup Mount with Cradle Bundle
Slide your iPad or Galaxy Tab into this new PED holder for aircraft seats and - boom - seat-back IFE. (Seat and PED rack from Geven.)
Planet Jeffro — Airplane tray table iPad holder idea