A cooler is disclosed. An illustrative embodiment of the cooler includes a thermally-insulated cooler receptacle having a receptacle interior and a thermally-insulated cooler lid carried by the cooler receptacle and positional between open and closed positions. A pressure switch is carried by the cooler receptacle. The pressure switch is closed when the cooler lid is in the open position and open when the cooler lid is in the closed position. A plurality of LEDs is provided in the receptacle interior and connected to the pressure switch. A power source is connected to the pressure switch.