Starting from April 27th 2020, it is mandatory to cover mouth and nose in public transports in Berlin (DE). The iSphere is an open-source project that everybody can produce, develop and improve. The iconic design is inspired by the science fiction comics of the 50s and the creations of the utopian movements of the 60s; it is pop, and it belongs to everybody. The iSphere is a funny and serious object that stimulates how to approach this  exceptional situation. Take a look at the tutorial and get involved here.