This uses the suction-hook from IKEAsStugvik serie, http://www.ikea.com/se/sv/catalog/categories/serie... IKEA claims it's rated for 3kg/6.6lb - http://www.ikea.com/se/sv/assembly_instructions/st...
I didn't have the common sense to write down the printer settings - sorry about that!
This copy was printed in PLA (Miami Hot Pink Deluxe: Semitransparent!) with rafts and needed an hour or so to remove and trim away extra material to make a good fit. A test copy printed in ABS with rafts fitted without trimming, ymmv.
Enjoy and happy dishwashing!