I found the absolute perfect clear plastic case for my Bernina 830 bobbins. Go to Joann's and where they have the Simplicity machines (binding/piping/accessories) there will be a: "Bobbin Storage Case For SideWinder". It holds 24 of those big bobbins. I tried to attach photo but couldn't (?) But if you go to Joann.com and type in simplicity bobbin it will come up. It is wonderful. Karen