Small tiny mini spool for leftover filament

Description

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.