Here is the result of my project: a mini Rocket-stove, assembled out of old chick pea tins and vermiculite (the vermiculite is the insulation around the sides).
Rocket Stoves are very efficient at burning stuff, and I intend to take this camping at the weekend and cook my meals using only a few twigs. I haven’t tested it yet, as my yard is quite small and shared weith my neighbours, not sure they’d appreciate the flames.
I’ll post pics/video once I get it running, too.
What? Why Bother? 
Burning “stuff” huh ?? – *nods knowingly* – nudge nudge wink wink say no more…… LOL
Bacon and eggs cooked on one of those babies sounds good. I hope it works !!! – ( Cold uncooked eggs are so tasty !!! )