Make a Micro Fire Starter Kit with Just a Few Items
With just an old lighter, you can create yourself a tiny fire starter kit that fits on your keychain so you will always be able to survive. By cutting the lighter in half and packing the empty space with some cotton and match heads, everything you need will be kept inside. After you have all that in the small space, seal it up with hot glue to make the whole thing waterproof. This is perfect for your next adventure!
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Advancing smart dust concepts is inhibited by a lack of equally small on-chip power sources that can function anytime and anywhere. Could this microbattery the size of a grain of salt be the solution?