|As I strolled the aisles of the Dollar Tree store I was taken by those large plastic containers for the three or four week supply of multi vitamin pills. Sure enough, the four week, seven day ones are perfect for storing bobbins....and you can see through their opacity for the color of thread. The other size vitamin containers are just the right size to hold sewing machine feet. At only $1.00 you can have several on hand and be organized. Go look, you'll love it!