Got tired of the mess around the printer.  Designed a block for storing nozzles, and a box for storing blocks and tools, etc.

The nozzle block needs 6mm heated inserts for the nozzles to screw into.  This is for creality printers.  If your nozzle is different, find and use the appropriate heated insert.

Designed in FreeCad, on Linux.  FreeCad files included for your modification pleasure.   :)