As i drifted afar to dreamland, I recalled a very important thing I meant to mention of touring in general, but ultra-lightning for sure.

All-in-one soap. Learn to love it. I personally use Dr. Bronners or "One" for everything on the road, from toothpaste, to laundry/dish soap, and of course, cleaning my bodily possessions. Bronners can be a pain because it's a liquid; though you could use the bar, I generally dislike bars while touring/traveling. The one exception is "One" (which I can't seem to find a website for, because their name is stupid), which you can get in a travel tin. The tin has drain holes in the bottom, so it dries out, which is unremarkably nice.