We had three power cuts last week on three different days. None of them lasted more than about half an hour but all 3 coincided with me stopping for a cup of tea or coffee. As everything in this house is electric apart from the woodstove that meant no way of boiling a kettle unless I lit the fire and it was far too hot to do that. Luckily I have a Kelly kettle. These cunning devices were reputably invented by an Irish fisherman as a way of brewing hot drinks on a wooden boat in the middle of the sea. They are sometimes called Storm Kettles because they can be used in any weather.
The top part consist of a tube which is the chimney inside another tube enclosing water. This stands on a base which holds the fire. You fill the jacket with water through the spout. The bung keeps the water clean until you are ready to use the ketle but must then be removed or the steam fires it like a missile!
Put paper in the base with a bit sticking out through the air hole and cover it with small pieces of dry wood, stand the top on it and set a match to the paper. Then you feed more bits of wood down the chimney until the water boils. I always have plenty of shavings lying on my workshop floor which are perfect for this but and small dry twigs or kindling will do. Once you have a proper boil lift the top off the fire (an oven glove makes it easier) and use the bung on its chain to tilt the spout so water pours into your teapot or mug. Simple but very effective! I could have boiled just one mugful but I chose to fill the top up to the spout as it is then easier to see that it is boiling and put what I didn’t need into a flask in case the power was a long time coming back on.