Dual Under Desk Headphone Holder
Rounded as not to produce any dents in the head padding.
Printed in two pieces without any supports and fitted together afterwards (I would recommend a drop of superglue).
Mounting to a desk/shelf is done via Double Sided Tape. I would recommend 3M VHB or Commandstrips.
If needed you can also drill hills into the base plate and mount that before glueing the pieces together.