Applying the concept of origami to any type of paper that can be considered waste. Also, 3D Pen technology (PLA as a Biopolymer material and solar battery as a source of energy) would be necessary. The goal is not only to redesign and revalue used paper (a concept of Engineering and sustainability), these pieces are located throughout Burgos in a strategic location and the visitors must blend in with local people asking and looking for them, with the goal of identifying the pieces (a concept of social art). These pieces will be shaped in a particular way to represent Burgos.