THE DUCK JUNIOR DUSTFILTER CLIP
I found Panayiotis_3d's The Duck - Filament Dust Filter Clip very useful, but the clip was a bit too wide to grab securely enough onto my spools.
I post this as a remix, alltough it is completely drawn from scratch. I changed up the design a little, and reduced the overall size. See last image for comparison beside the original.
It prints quite fast @ 0.25 res, and 0% infill. I have one clip on all my spools, color coded offcourse =)
Load the sponge into the lid.
Is your printer a Flashforge Finder, or Flashforge Inventor ?
Check out my overhead spoolholder design: