LifeHacker brought our attention to this really cool DIY rocket stove design. You just needs some tin cans, a pair of tin ... ideal for camping. And it should take less than an hour to build.

We've previously covered larger rocket stoves designed to heat your home, but now we have a portable version of the highly-efficient wood stove that you can build with 4 soup cans, 1 larger #10 ...

One or two of these items can be used to create what's known as a "hobo stove" for heating food or boiling water efficiently. The hobo tin-can stove is about as simple as it gets. Find a large tin ...