I have been working with some friends of mine to develop a small flat pack firebox/stove. We are just about there, in fact a prototype was taken to the December Bush moot by andyn and some of you may have seen it. A couple of suggestions on improvements were made and we have now put these on the latest model. Below are some pics of the item before the updates. basically the latest version is slightly wider to accommodate a 12cm billy can and has more air holes along the sides to allow larger pieces of wood to burn easier.
They are all Stainless steel and VERY well made. You can choose to have the top plate on, with or without a chimney, or remove the plate and attach the rack (great for toast). This is just to suss out who would be interested in one of these, as I think they would make a very useful item in your kit. I am making no profit on these and if I can get 20 of you together can get them at £40+postage each.
Feel free to ask questions.