I have been on what seems to be a never ending quest to find the perfect bobbin storage system for ME.
Many were great!!! for a while. But so many required so much "thought" or effort... I seemed to place all my effort into sewing rather than organizing pesky (until I needed them) bobbins.
The manicure system required too many parts. When I sew doll clothes, I want all the thread colors around me and this method did NOT work for me.