Well, my goodness, the interest in this sewing box of goodies just keeps growing...and no, my purpose wasn't to try to sell any of it; just to figure out what a couple of the things were. I googled darning thread to see if it's still available, and plenty came up for sale. If it were something that was no longer found, then I'd be willing to sell it. I think keeping the contents as a keepsake is fine for now.
Yes, I agree with gramma nancy, plenty of the things are "modern" and most items were familiar to me. So don't feel too old. The stories shared as to various uses were quite enlightening and paint a vivid picture in my mind. Thank you all!