I saw my grandmother using picks like those pictured to guide fabric through the sewing machine. Please note that I can be found doing the same thing with a long pin, the point of an embroidery scissors, and anything else that comes to hand when I need it.
The very point of one pick was broken off and I am contemplating re-sharpening it. Seems as though I have a selection of different grit fingernail files that could do the deed. When there is peace in my valley.
I have no idea about the spools. The tatting shuttles are fairly recent, though. I bought the metal ones for myself at a craft store. Gave up on tatting. My fingers kept turning blue - no blood flow.
Enjoy the day and keep warm.
Pat