Someone here posted a great idea a day or so ago. She has those big loose-leaf rings and threaded the bobbins on them and closed the rings. You could carry them with you to classes, etc. Or, you could color code them and link the rings together, if you have a bunch of bobbins. You could use baby pony tail thingys to keep the thread neat. Wonderful idea! After the hurricane (or tropical storm) leaves here, I'm getting the little pony tail thingys and organize mine this way.