Another useful accessory would be a vacuum (Thermos) bottle or two. When I spent a month in China in 1993, water for drinking was provided everywhere our group went, either right off the stove or in a vacuum bottle - they were everywhere. Our group of twelve was in China a month, not in the usual tourist places, but well into the backcountry (Guizhou Province), eating locally prepared food always drinking boiled water. We had no cases of intestinal upset or Montezuma's revenge. Just one of the reasons I am such a fan.
If no thermos is available, a cozy can quickly be fabricated from a foam pad.
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Geezer in Chief