Saving Thread? Well, yes, I do "hoard" or "save" thread, up to a point. I am particular about what I save -- i.e., White, Black, Navy and Brown -- the basic colors I used to use on garments. Now, I mostly save the white's, light gray. Several years ago when I was making baby clothing, i.e., baby dresses, with lots of ribbons and lace, I would save those colors, because for most of the dresses I made, I knew I would most likely be making the same pattern/color dress for another baby. It also depends on how much thread is on the bobbin -- does it have just a small amount of thread? or is it 3/4 full? I would not save thread wound on a bobbin 2-3 rounds thick. That thread, I would discard, or remove from the bobbin and put it to use in a different manner! I'm not sure if any of this is making sense -- It's not something I really give a lot of thought to!
Jeanette