Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5262964.
I don't know about you, but I have a lot of filament, and at least 4-5 different rolls of black and white. Each are different materials, and they all look the same.
This makes it really tricky to see "at a glance" which roll is which, especially if they are in bags and in a cabinet.
Thus, I have created some simple "labels" in the form of filament clips, and printed them each in colors (the colors that each filament is in my Cura / Slic3r).
Now, I can tell from afar - or within a dark cabinet and through a bag - which filament roll is ABS, which is PETG, and which is FLEX.
Tips not necessary but always appreciated - particularly if they're Bitcoin (bc1qs6trwt00dmtkaye59mwhxg5ne83klhxgultn52) or Lightning (jonathanlevi@ln.tips)
I'm planning to make MATTE ones, too.
Print them face down with no supports. Brim is optional, but helps keep them down depending on how good your adhesion is