I made a "flight controller platform" so I could use the RC controller with my Samsung Tab S 8.4 tablet. The tablet is too wide in landscape mode to fit between the RC foldout arms.
I took a clipboard, removed the metal spring clip, narrowed the top to match the width of the controller, cut off some of the bottom to shorten the height of the clipboard. I attach the RC to the top of the clipboard using rubber bands and attach the tablet to the clipboard beneath the RC using rubber bands.
This gives be a handy platform that supports the RC and tablet.
Barry.