Anyone ever use the Sierra Zip Stove? That's what I've been using for years. It's a little heavier than the typical backpacking stoves, but I like not buying and carrying fuel. It boils water very quickly, which is usually all I do in the backcountry: coffee, tea, freeze-dried meals, noodles, etc. In the Smokies there's no shortage of small twigs to feed it, but you might run into trouble if you often backpack in deserts or above treeline out West.
"I ain't rich, But Lord I'm free" - Amarillo By Morning, George Strait