If I think I might run out of bobbin thread before finishing a long seam like a border, I'll take the bobbin out and unwind the rest of the thread. I usually just throw that thread away. But then, the quilting gods get back at me for wasting by making me drop the bobbin while unwinding it, and I have to get down on my hands and knees trying to find that clear plastic bobbin under whatever it decided to hide under, and then I have to stand up again! Maybe I should learn my lesson already and quit wasting thread!
Renee