Scientists have come up with an electric generator that can be assembled from ordinary sticky tape

Mechanical energy is also required to compress the plates of such a generator, but it can be extracted from a wide range of sources. For example, from the oscillation of tree branches in the wind, the movement of waves, the footsteps of passersby on the stairs, the movement of folds of clothing when playing sports, the swaying of elements of transport when moving, even pressing the keyboard buttons when typing. The energy output will be small, but it is a virtually free source of electricity, which can be used to power numerous sensors and transducers.