Ha ha! That's pretty darn comprehensive.
I've got a good collection of wax (paraffin and beeswax), candles, and candle making supplies. Lots of canning jars and canning equipment. Sewing stuff: pins needles, buttons, snaps and hook fasteners, zippers, ribbons, and thread. I've been looking for scissors; good ones don't show up often. And I have way too many biscuit tins.
There's a place in Washington or Oregon that sells a product called "otterwax" for waterproofing fabric. I've thought about that, but it has a self life and I think it's something people could figure out pretty easily.
There are lots of things on your list I wouldn't choose since I don't have storage space for them but there's lots here that is compact and portable there too. Guitar strings, hmmm.

Do you have a comprehensive list of skills to share?