Abstract: A portable and cost-efficient transportation system with an integrated electric generator, capable of transporting various objects, while producing an electric current and sufficient quantities of electricity through the simultaneously created rotation of the device's wheels. The harvested electrical energy can then be stored in an integrated battery and utilized directly via an integrated power AC outlet socket, USB port and/or integrated lighting mechanism. The portable device encompasses collapsable features, such as a collapsible handle and base, for simplified transportation and employs efficient generators to generate a steady flow of electricity during usage of the device.

Abstract: A place-mat/mat having an integrated heating area is used to keep food and beverages warm, making food and beverages more enjoyable to eat or drink, and may also function/be used simultaneously as furniture, such as a place-mat. The integrated heating area employs a phase-change material (PCM). The PCM such as preferably a supersaturated solution of sodium acetate is provided as a reusable heat reservoir and warmer. The place-mat/mat is directly placed under a plate/container in which the food or beverage is served or located.