About two years ago we bought a cheap rather light stainless steel pouring pot designed for about 2 euros in the Chinese store close to the route out of Sarria (not long after after crossing the rio). It weights 6.6 ozs and holds a little more than 750 ml of water. We fill the pot up almost to the top so the coil is well covered. We now buy a small supply of paper cups, as needed, and use them for drinking the tea we make. The heating coil works like a charm and we only need one tea bag to make two + cups. Making in the metal cups works fine too, but by the time the metal is cool enough for my lips to drink from it, our tea is cooler than we want to drink it. (Yes, I do I know there is piece one can put on the cup to protect one’s lips).
We have made instant mashed potatoes, rice and boullion. We made soft boiled eggs for supper (requires us to reboil the water ) put a lid over the pot and wrap a towel around the pot to keep the heat in. Repeat the process after 5 minutes. We only do this at night because we want to get an early start in the morning. Also, if you have eggs and they are cold (in off-season) and your have a radiator available in your room (with heat) put the eggs in hot water from the tap, and put them on radiator to get the eggs warm before you put them into boiling water. They will cook faster!