I just watched a video on this yesterday and I thought it was great and it won't cost you a thing. The lady takes the spool of thread and the bobbin that was wound with that thread and puts a straight pin in the top of it and puts the bobbin on the staight pin. You now know exactly what type of thread is on the bobbin and a storage place for it. You can also go to the $ store and get the pony tail holders for little kids (the fat ones with alot of material round them) and put them on your bobbins to keep them from unraveling.