Advances in micro- and nano-technology allow for testing concepts derived from classical thermodynamics in regimes where the underlying assumptions, such as the thermodynamic limit and thermal equilibrium, no longer hold. Single-particle heat machines provide an excellent platform to test theoretical advances in and our understanding of thermodynamics at the micro- and nano-scale. In this project, a minimalist heat engine has been realized that takes advantage of squeezed heat to outperform conventional heat engines. The non-equilibrium nature of these reservoirs permit work extraction from a single reservoir and engine efficiencies unbounded by the standard Carnot limit. A major open question remains whether highly miniaturized heat engines will be able to use the extracted work to accomplish mesoscopic tasks as transporting particles or manipulating biological matter.