Maybe this fits in the 'outdoor gadgets' section of this special, but it's so strange we think it really belongs here. Designed for outdoor use, this camping stove isn't designed to run on traditional fuel like gas or oil. Instead, you fill it with whatever's handy - twigs, wood, dry leaves- and then ignite it, generating enough heat to cook food, boil water or charge your phone.

Yes, you did read that right. The futuristic technology in the BioLite CampStove(we can't be any more specific than that) converts heat from the fire into usable electricity, with a USB port on the side capable of supplying power to a phone, lamp, tablet or any other gadget you care to plug in. It's far more convenient than a solar charger, not least because you can keep it running even at night, and while it isn't quite as ecologically friendly, it does strike a better balance than most other portable electricity sources. It's not just a camping stove; it's also useful for supplying power in developing countries where infrastructure is non-existent or in disaster areas where the infrastructure is damaged.

And if you're in the UK, which rarely has either of those problems, at least it's giving you an alternative during a power cut. At its peak it supplies 4W at 5V, which (in real money) means 60 minutes of iPhone 45 talk time for 20 minutes of charge. It's available in the UK for just 145.99. Which might sound like a lot now, but when society collapses it'll be worth the money just to keep your iPhone alive.
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