I created a tray for you to hold your extra Flux tool heads in. It's got openings for the magnetic joints, and is deep enough to clear the printing nozzle. Also incorporated the FLUX logo in a few places.
Editable RSDOC DesignSpark source file included. I've also included the file of the FLUX logo that I created so you can emboss your own creations!
V2 uploaded. It's a much nicer fit.
edit V2 didn't sync right and got an old save revision... Delete it and use 2.1 - that's the file that you want. Sorry for the confusion.