This is a knob replacement for the Prusa Mini(+) that can hold four E3D V6 Nozzles. It prints tight so you can screw the nozzles into the part so they don't fall out, but if you don't prefer that and want more of a loose approach then you can increase the size in your slicer. (102%-104% works well.) This is a very simple but functional design that can print quickly too. I am currently working on a version of this for the MK3 but is slightly challenging seeing as though I don't have one on hand for reference.

When you are screwing your nozzles stop tightening when the nozzle hits the plastic part so you don't risk damaging anything. You can print this with PLA at 0.2 layer height and will take about 18-20 minutes. Thank you for your time and happy printing!