I confess without embarrassment to a long history of using wood burning and alcohol stoves under safe/legal and appropriate conditions on bike, ski and kayak tours over the last fifty plus years. The Sierra Zip Stove and the Emberlit stoves mentioned and Trangia alcohol stoves have proven useful for my needs on tour. Small twigs gathered at home and on site have powered these wood stoves handily. Just one of many tools to choose from for touring.