A mug (400; 600) comprising: an outer circumferential wall and a bottom portion attached to the outer circumferential wall; an inner circumferential wall that extends from a proximal portion to a base and has a distal portion adjacent the base, the inner circumferential wall defining a chamber configured for holding a liquid, the inner circumferential wall being shaped relative to the outer circumferential wall to define an annular gap between the inner circumferential wall and the outer circumferential wall, the base spaced apart from the bottom portion to define a cavity (450; 630) between the base and the bottom portion, characterized by further comprising: a heating or cooling system (455; 655) disposed in the cavity (450; 630), comprising a heating or cooling element (460; 660) disposed in thermal communication with the distal portion of the inner circumferential wall so as to conduct heat through the distal portion of the inner circumferential wall and into the liquid in the chamber; a wireless power receiver (492; 692) configured to wirelessly receive power from a power source, the wireless power receiver (492; 692) being in communication with one or more energy storage devices (480; 680) and configured to charge the one or more energy storage devices (480; 680); and control circuitry (494; 694) electrically connected to the wireless power receiver (492; 692), the one or more energy storage devices (480; 680), and the heating or cooling element (460; 660), wherein the control circuitry (494; 694) is configured to control the operation of the heating or cooling element (460; 660). an outer circumferential wall and a bottom portion attached to the outer circumferential wall; an inner circumferential wall that extends from a proximal portion to a base and has a distal portion adjacent the base, the inner circumferential wall defining a chamber configured for holding a liquid, the inner circumferential wall being shaped relative to the outer circumferential wall to define an annular gap between the inner circumferential wall and the outer circumferential wall, the base spaced apart from the bottom portion to define a cavity (450; 630) between the base and the bottom portion, characterized by further comprising: a heating or cooling system (455; 655) disposed in the cavity (450; 630), comprising a heating or cooling element (460; 660) disposed in thermal communication with the distal portion of the inner circumferential wall so as to conduct heat through the distal portion of the inner circumferential wall and into the liquid in the chamber; a wireless power receiver (492; 692) configured to wirelessly receive power from a power source, the wireless power receiver (492; 692) being in communication with one or more energy storage devices (480; 680) and configured to charge the one or more energy storage devices (480; 680); and control circuitry (494; 694) electrically connected to the wireless power receiver (492; 692), the one or more energy storage devices (480; 680), and the heating or cooling element (460; 660), wherein the control circuitry (494; 694) is configured to control the operation of the heating or cooling element (460; 660). a heating or cooling element (460; 660) disposed in thermal communication with the distal portion of the inner circumferential wall so as to conduct heat through the distal portion of the inner circumferential wall and into the liquid in the chamber; a wireless power receiver (492; 692) configured to wirelessly receive power from a power source, the wireless power receiver (492; 692) being in communication with one or more energy storage devices (480; 680) and configured to charge the one or more energy storage devices (480; 680); and control circuitry (494; 694) electrically connected to the wireless power receiver (492; 692), the one or more energy storage devices (480; 680), and the heating or cooling element (460; 660), wherein the control circuitry (494; 694) is configured to control the operation of the heating or cooling element (460; 660).