Disney invented paper, which can... generate electricity! If the pressure on the sheet of paper like this or, say, rubbing it will generate a weak discharge. The received energy is sufficient, for example, to power multiple led lamps or in the future, to enhance the interactive books, toys, etc.
Paper is a combination of Teflon plates (dielectric for a long period of time retaining a polarized state), plain paper with conductive ink (or polyester with silver coating), and wires.
There are also unusual paper, from which grow the vegetables.