This a shelf that clamps around the weird roundish-square pipe that the Levo G2 Deluxe, and probably others, use. You will need two M5x12 bolts and nuts.
This is only meant to hold light things. The square one (pictured) is good for joycons, pens, candy, tissues, etc. There is also a rectangle one for larger game controllers and remotes.
There is an optional hook for the back piece. I'm using it to hold up an extension cable.
The author marked this model as their own original creation.