Sometimes normal nozzle boxes are just too small. Therefore a stackable design might be helpfull. Also i use the upper level espicially for my vulcano nozzles and the normal v6 nozzles that don't fit go into the lower level.
One level has place for 81 nozzles ;) If thats not enougth just take another level.
They are devided into rows for 0,2/0,3/0,4/0,5/0,6/0,8/1,0/1,2 and also labeled for Brass/Steel/copper.
PRINTING:
Well nothing special. Use 0.4mm to get all details, but bigger nozzles will also work if you don't care about the text. The Material also doesn't matter much. I used the print for testing to print POM (warps quite a bit even with my chamber).
The author hasn't provided the model origin yet.