...electric stick-thingie you can use to put into a cup of water to heat it? I am looking for something to use at an electric campsite that will give me a cup of morning coffee I know I can get a "hot pot" for about $15-$20, wondering if this other contraption is cheaper. I am not getting a camp stove/cooking gear until probably next year so need some way to have my morning cuppa.

Can't search for it on the internet if I don't know what it is called...have been trying but so far unsuccessful - I am sore that someone here knows what it is called - thanks!