Papercrete Dome Project
Their first papercrete dome was a simple project to house their PV battery bank. With only minor modification, it should be possible to use the same technique to build any small shelter from a child's playhouse to a simple guest house. Reinforced papercrete domes are both strong and weather resistant, if the proper finishing layers are applied. Insulation properties are good, and could be modified to the particular location. Thermal mass characteristics can likewise be adapted to location, with simple modifications. Creative possibilities in design are immense with these building techniques.
H/T to MAKE and Wired