Posenenske applied primary coloured sticky strips to paper, creasing them and then applying them in layers until shapes were built up – as in CMP 65 (1965) for example. She progressed to using sheet metal sprayed with monochrome paint which she then folded into sculptural shapes, and combined this with corrugated cardboard to produce the series ‘Vierkantrohre’ (Square Tubes, 1967) which look like ventilation shafts. She conceived these early sculptures as modules that could be adapted according to available space, each one assembled into a shape ultimately appropriate to the context it found itself in.