These are pretty cool, 1pint size is reccomended for an individual on foot, boilswater efficiently in 3-5 minutes and provides a"volcano stove" effect out the chimney to cook over. http://www.kellykettle.com/works.html
Those things work great. I met a guy a couple of years ago when I was hiking who had one made from pure copper. Really did a bang up job. Hope ya get one for Christmas. AE