PlastiFantasti is a HIFI system made of CNC milled and folded sheets of recycled HDPE, the culmination of a years’ worth of research and development of new technologies for using recycled plastic. In this process I followed the principles of: accessibility with emphasis on product disassembly and assembly, the use of few parts, and a limited range of raw materials. The outcome is an honest, transparent, and colorful design language, coherent to the subject matter of music playback. The project carries out design for a circular economy through its materials, construction method and affordance.