A simple DIY Project making a one log rocket stove using a driftwood stump offcut and three nails, total cost If had paid for the nails would be about 30p?
Youll probably get about 3 or 4 uses out of this before the feed and burn chamber get too big. Once they are of a decent size, put in some empty steel food cans and pack around the cans and the log with either some sand or a mud mixture and it should last a fair bit longer.