I like watching videos on my tablet computer while lying down on my sofa. In order to see the display without being forced to watch sideways or getting a kink in my neck, I have to hold the tablet in my hand above my body. Since this gets too heavy very quickly, I thought about propping the tablet up on the back rest of my sofa.
My problem is that any stand or prop always has the display facing upwards. But my head lies below the tablet, so I'd like it to face downwards (without covering too much of the display).
How can I mount my tablet onto the backrest or a big pillow of my sofa so the display faces down?
I need to use my tablet for other purposes than watching videos, so the solution should not permanently attach it to the sofa or otherwise make it hard to use. It's acceptable to buy and repurpose appliances and other stuff for this, as long as I can store the result away when it's not needed.