3D-Printable MacBook Pi Mount

I need a parametric enclosure I can print myself that temporarily clamps to the top edge of a 14-inch MacBook Pro screen without leaving a mark. A single thumbscrew should tighten the mount against a thin TPU lining so the lid is protected yet the whole unit comes off in seconds... (Budget: $250 - $750 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, 3D Rendering, Fusion 360, Product Design, Solidworks)