A simple cup/mug hanger that can be screwed to the underside of a shelf that hold 3 cups or mugs. Printed in PLA at a layer height of 0.2mm at 100% fill. Held in place under the shelf with 2 screws, the length depends on the thickness of the shelf. Mine took just under 2 hours to print.
Update 18/1/18 - A shorter 2 cup version has been added for those with smaller printers