The Quick-Boil Billy!
The Kelly Kettle* has been used on the West Coast of Ireland for over 100 years by the local fishermen, and has become a must-have item for camping, fishing, hiking and general outdoors activities.
The Kelly kettle is a double-walled chimney with the water contained within the chimney wall. Fill the kettle with water, light a small fire in the base, set the kettle on the base and drop additional fuel (twigs, leaves, grass, paper, etc.) down the chimney. Due to the large internal surface area of the chimney the water boils in minutes.