Review (5/5): Terrific oshibori!
These aren't particularly cheap, but ... I do this combination of mass transit and eating lunch immediately afterward, and carrying around a few of these "oshibori" in a backpack is way more fun than looking for a restroom for hand washing. Plus, if you go to a Japanese restaurant that doesn't supply you with something to clean your hands before dining, you can semi-politely shame the staff ....
Also, the towels are obviously reusable, and I have this plan to wash them, moisten them slightly, vacuum seal, boil, and put them back in my backpack....