Originally Posted by joeyoz
You really need to use the bobbins made for your machine. Throw the metal ones out. I learned that lesson the hard way.
Don't throw them out!
Use them this way. Wind thread on them and carry them for handsewing. Several of them will hold a lot more thread than a lumpy unhandy shaped spool.
Bunches of the filled metal bobbins fit into a little pocket kit.
I also like to wind decorative thread on them.