Wow! Even more ideas! TraceyLiz is so right: I am so grateful for all the ideas and such kind support. Thank you. You know, there are more (and better, more creative, more thoughtful) suggestions in this thread alone than there are in a book I read a while back on the subject. This is making me want to catalogue all the suggestions I have found here and elsewhere, to help others. (Diane, I will definitely look up that Dress Assistant app!)
It is so incredibly useful and motivating to hear others' suggestions: they inevitably spark many more ideas. Put it this way -- Suz's interest in my library (which BTW contains more books than a beautiful library I visited that was in a book of the great private libraries of the world, though mine of course has only a very small number of antique first editions and is crammed into a much small area than that spacious beauty -- I don't keep much fiction though -- once it's read it's donated unless exceptionally good) somehow clicked me into gear WRT my wardrobe by bringing my thinking/motivation into line with my very organised, rational thinking about my library (I have been thinking about dramatically reducing its size because I never want to pack and unpack that many books ever again, even with the bar code reader I used to ensure I'd know which box any given recentish book was in to make it easier to get them all back in the correct areas again post move) and I don't find it in the slightest bit difficult in connection with my books, to reduce, ruthlessly, so really, this is making it suddenly feel easy to do this WRT my wardrobe too. At any rate, THANK YOU everyone! I feel inspired and motivated!