That's a great list! I'll go through my kit and see if I have anything to add. I have to have my tea along also. The water bottle and nesting cup will go along with me on snowshoeing trips (if we ever get enough snow) and an Esbit stove boils up a quick cup.
Although I still pack along an inexpensive space blanket, at Chris's suggestion I have gone to an oversized orange plastic bag for emergency shelter (Coglans markets one). I still think the space blanket will serve multiple purposes including signaling (large reflective surface area), trail marking (cut strips to hang on bushes instead of plastic ribbon) and first aid (they're large enough to fold into a sling). There are doubtless other uses I haven't thought of besides the original use.
Terry