Articulating, Wall-Mounted... Plate?

thingiverse

I grabbed the case designed for a 7 inch display and thoroughly hacked it apart in Tinkercad until it was nothing more than a plate with a reinforced knob at its back. Specifically, I used a large box and the group tool to shape it. I needed a makeshift way to attach a tiny keyboard, and by George did I figure out how to do that.