This ib can be done by every people.
U can get two different size of metal right angle irons and using a zip tie to make a "J-shape" structure.
As u seen in the photo, find a furniture that made of wood (or iron with magnet), and install it.
This design is simple and adjustable (using only one screw made the angle adjustable and can hold any other things).
Last but not least, u can charge the controller when it placed in the dock.
However, as a maker, I make it from acrylic. It seems good !