Kirigami are paper cut-outs, usually made by people from eastern countries such as China and Japan. They make shapes of popular objects, birds and buildings.
The same techniques are now used to cut out sheets of graphene, one atom thick. The products respond to vibrations and changes in light and temperature, responding with very small-scale movements. There are endless applications in sensing, manipulating, and complex nanoscale robotics. Applications are in the work of MK Blees et al, Nature 524, 204 – 207, August 13.