Filmant spool clip
A small clip to hold open spools that''s designed to use TPU elasticity to keep the filament in place while being very small and to fit multiple spool types (I have about a dozen different spool types and it fits them all). Holds the filament in place even when the spool is upside down. 1.75mm filaments only, has holes in both sides so it doesn''t matter how you put it.