There are a million micro sized camp stoves out there but the problem with many of them is that they run on propane, or some variant that is just as flammable. I never have liked the idea of carrying explosive material in my pack or panniers. So when people come up with compact camp stoves that run on dry fuel I pay attention. Right now I am liking the Backcountry Boiler. Its small, lightweight, heats a good amount of water and runs on anything that burns and will fit in the chimney. Check them out at http://www.kickstarter.com/projects/1763800459/backcountry-boiler-hot-water-from-found-fuel to order ($80) and see more info.