This very natural chair was spotted at the London Architecture Biennale (where else!). It is as pure and basic as they come: take some bales of hay, cover with grass turf, and abracadabra—a chair. Comfortable, compostable and completely eco-friendly. Just don’t wear white trousers….Also seen at the fair: natural, electricity free blenders for making smoothies. Chop up the fresh fruits and put them in a blender. Attach the blender to the stationary bicycle and pedal away. The pedal power, supplied by the customer, supplies the energy to make the blender go. Oh yes, be prepared to wait quite a while for your drink.