Why yes, I do carry a threaded needle with me at all times. Why do you ask? Thread tagging? Sometimes! But the real reason I keep a length of floss and an embroidery needle with me in my coin purse (hoo boy, now I do sound like an old lady* or what) is in case I come across a fabric I like and want to test its stitchy-ness. I am always ready to find the best fabric for stitching.