You can save money by bringing coffee to work in a thermos rather than buying it there. Before filling your thermos with coffee, fill it up with hot tap water and let it sit for a few minutes. This will help warm up the thermos before adding the coffee and it will stay hot longer.
I google-ed "gott thermos" and your site came up. The statement "Replacement Cap For a Metal GOTT Thermos" was exactly what I am looking for. I clicked on your URL, but I find nothing about replacement caps or Gott thermoses.
Can you help me find a Gott thermos replacement cap?