I have two models I use as a benchmark that I can actually use but changing nozzles and materials quite often lately, I now really have enough carabiners and power outlet dust protector plugs so if anyone has another idea for something that takes no longer than 2 h to print, is not tricky to print in general but needs proper first layer adhesion and is useful in quantities of 3-5 or more, I am open for suggestions. #3Dprinting