I use a thread rack and I like those rubber doughnuts that you can put the bobbins in and it holds and won't fall out. I keep my cone threads in a big plastic barrel I can see in. When I work on a quilt project I keep the thread and the bobbins together in a baggie so I know which thread soes with it. If I have a cretain thread, I keep the bobbin it loaded attach to it with a twistie. That way I know that thread is on that bobbin. SO many things to keep up with.