UK firm dwelle have created a range of carefully designed 'micro-buildings' that are sustainable, portable and adaptable. These "sheds for living" came about when dwelle investigated options for a housing market plagued by high costs and limited options. Using their own eco-development experience creating one-off bespoke residences for well-heeled Brits, dwelle have produced a range of pop-up buildings that are now being used as eco houses, home offices, playrooms and guest accommodations by their owners. With features such as insulation made from 100% recycled newspapers, double-glazed windows and an easily achieved zero-carbon status, the dwellings are both smart and sexy. The four prefab options - Beach, Office, Little and Big - range in size from 7.5-24 square metres, and will set you back between $25,000 and $85,000. [Via Inhabitat]