A mains electricity (AC-powered) device designed with a heating element, thermostat and an automated shaking mechanism to heat and shake its contents (i.e., the water and objects placed therein, e.g., bottles containing cultures or trays of gel). This device has an eccentic agitation arm that rotates at speed ranges of, e.g., 25 - 400 revolutions per minute (rpm) to create the agitation. It may incorporate a range of features such as automatic water replenishment, heating and/or cooling, automatic motion acceleration to avoid unwanted splashing.