A friend gave me these wonderful plastic bobbins, some of which already have some floss wound onto them, along with some spools of perle cotton. I was thrilled with the bobbins to say the least. I plan to rewind the floss onto my normal storage system and then wind some of my perle cotton spools onto the new bobbins. It sure will make storage a lot easier! Spools take up so much space and are notorious for escaping their confines and rolling all over the floor. The cat is the only one that is thrilled with that!!