Maja's House by Ultra Architects
Via @muuuz, a modernist kid-scale house in Poznan, Poland (6 sq. m) built with leftover materials after building the adult-scale residence next to it. Inspired by Herzog et De Meuron's Rudin House, Maja's House has an open plan, the side walls can be completely opened and the chimneys are not just decorative, they also provide ventilation. More at Ultra Architects.