The development of nanotechnology stems from our understanding of quantum theory combined with creativity and expertise to engineer on scales that are smaller than the width of a single hair. The application of very small (nano) technologies is now extremely big news----from the latest in mobile phones to healthcare---it seems as though we leaping ahead with applications. Underlying these advances, however, are difficulties in harnessing a probabilistic quantum world, and enormous challenges in small-scale engineering. In this presentation, I will describe the process of quantum design in nanotechnology, highlighting key developments and concepts that make the nanoscale different, challenging and exploitable. Examples of nanotechnologies, including from my own research, will aim to inspire about future possibilities in applications. During this presentation,YOU become the nanotechnologist, assisting to make a piece of nanotech from quantum know-how.