I designed this knife stand in Fusion360. The stand can hold 3 smaller knives (max. lenght of blade 13cm). Thickness of each “wall” is 2,4mm therefore it fits nicely with nozzle 0,6 and 0,4mm as well.

To save some time, I printed the model in the photo with 0,6mm nozzle and 0,30mm of layer height. Printed on Prusa mini+. For more detail see my print file. No supports needed!!!

Post photos of your prints in different colors in the comments please!