Just a basic wall hook for what is called a "lamper" (supposedly a cross between a laundry basket and a hamper). They are available at Walmart. I would print it on its side rather than upright for maximum strength. Printed in this way, you could probably get away with no supports. The screw hole has a countersink so the screw will sit flush. Screw into a stud. NOTE: My CAD program does this weird thing on stl exports, which requires you to scale up the object 10 times in your slicer program!