For my quilting bobbins I put them behind the spool of thread they go to it I didn't use it up. I also keep a couple that are almost empty near my quilt machine to use up when I go to baste the batting and then the top to the frame. It will be hidden within the binding so why not use it up that way. For my regular sewing threads I have these plastic thingies that you put onto the top of your spool that holds the bobbin to the spool it goes with. Also have the ponytail thingies but have yet to use them. In my drawer next to the machine I have a plastic case made for storing bobbins too. That was my original way of storing them but now I like the plastic inserts on the top of the spools better. I have one of the plastic cases for each machine so not to mix them up. Have a wire basket on my pegboard above one of the machines that holds my empty NEB bobbins as I use them for when I do a small mending job.