Using a binder or bulldog clip to firmly hold filament with the addition of 'pads' so that they can better hold filament during storage.
Also works for bowden tubes with a rewinder, will hold the end of the filament so it won't rewind back into the tube or spool.
Two pads will snap into the rolled edge of binder clips.
The pads have grooves in them going in either direction to help hold on to the filament.
If you are struggling to snap the pads on, use a knife to shave a bit off the indents.
Tested with Staples brand small binder clips.
The author marked this model as their own original creation.