I think of using a tablet to play or work while walking a treadmill. The treadmill's has a dedicated place for an mp3 player, ipod or a tiny smartphone only . I have 10 inch tabled with a base, and 13 inch one converting into a laptop with an attachable keyboard, and not yet sure which one will work best with treadmill.
I think attach an unused Vesa monitor stand to a wall or furniture and then glue loop and hook tapes to the stand and tablets.
Or should I rather buy a designated tablet gooseneck? Any other suggestions?