Down Grapevine Lane: Tutorial: How to label plastic floss cards
Amazon.com: Darice White Plastic Floss Bobbins – Keep Thread Organized and Untangled – Wrap and Store Floss, Needlepoint and Craft Thread – Perforated to Hold Thread in Place, 1-1/2” Long, 1,000 Pieces
DMC - 28 Plastic Floss Bobbins - CrossStitchWorld
Herrschners Plastic Floss Bobbins Accessory
How to use an embroidery floss bobbin winder - Stitched Modern