VESA Arm Shelf Mount

I had an extra monitor arm that used a VESA-style mounting bracket.

I decided to turn the arm into a movable shelf - and this design is meant to be mounted to the arm on the VESA plate and then a piece of wood/metal could be mounted to the top of this part as a shelf.

I've printed on using 20-30% infill with PETG - seems to be very sturdy.