ArchaicArcane

I betcha that the plastic ones wouldn't be hard to make a winder for, they all have those holes in the top other than the one in the middle for the spool pin. The wood ones,... I think there would be reverse engineering... unless it could clamp onto the bottom circumference?

I keep the old spools around for winding on weird threads that I find, or the bits from higher end shirts, etc.

edit: I almost forgot:
Canadian Quarter: 5g