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5. 3D chocolate printer. It’s the ultimate device for the sweet-toothed. A British team from Exeter University have developed the world’s first printer that lets you create your own custom-made 3D chcolate treats. The £2,500 Choc Egde machine squirts out chocolate and, via computer instructions, allows the user to build any shape they like out of the food.

Top 10 innovations of the year

Sci fi became reality this year with Google Glasses - computer-powered glasses that layer email and sat-nav over the real world. But other inventors pioneered even crazier ideas - from a flying drone that bellows encouragement while you jog, to a gun that makes people stop talking using a weird sonic effect.