This pair of "Knock on Wood" shoes by Agustina Bottoni is made of fragile 2mm sheets of tanganika wood. Using a structure following the natural distribution of weight in the foot, the design manages to support a person using a limited amount of material. There is for example, a higher concentration of pieces where the heel and metatarsus are supported.
Ben Kokes started out by designing and developing a circuit that would be able to power up the ring inductively. In the end, he used a coil of wire wound around kaplon tape as the inductor and a small SMD capacitor to power up three tiny ultra-bright LEDs.
Thirst Aid is a reusable hydration pack that looks like a saline drip pouch, but you can fill it with your favourite energy drink. It stands upu like a bottle when full and can be folded or rolled when empty. Not suitable for hot drinks.