Small tiny mini spool for leftover filament

**EDIT 6/July/2026: Added clip-on labels, as well as a stackable box that can hold up to 18 of them spools!**

I actually got these for those multi-color filament packs meant for 3D pens, but hey, those are about the same in amount as leftovers, which... puts things in perspective a bit. ANYWAY!

**The roll/core piece is meant to be made in TPU.** Why? Because I have more TPU than I need and felt too lazy to figure out how to fit 2 halves. Also has the benefit that TPU's pretty smooth so should help roll these better.

**For the brims I'm using PETG**, PLA will unfortunately deform in the dryer. **Also making the brims out of TPU is an option** if you wanna print a whole spool in one go without all that fancy multi-extruder doohickery. **The labels are also best printed in PETG** to prevent deformation shenanigans in the dryer. For the box anything will do, probably.