I mounted mine to the left of the outlet and epoxied an Arkon ball mount (https://www.amazon.com/dp/B01N7AOTJ6) to the ProClip. From there it's pretty easy to mount anything within reason to it. My particular setup includes a double socket arm (https://www.rammount.com/shop-all/popular-components/b-size) to move the device to the center:
If you do go this route just don't stretch out the arm too far out because it becomes a lever that pops out the ProClip.