Overview:

I have a set of imperial ER32 collets plus a 6mm collet.  I made a bin using the Gridfinity system by Zach Freedman for all of the imperial collets, and a separate one for the 6mm collet that also stores several 6mm bits that I don’t use very often.  Both bins are labeled, and you can add a pause in the slicer to print the text in another color.

Printing:

Print in any filament you wish.  No supports required.