Light-up toy with motion sensing capabilities

A toy for use with a child in a sleeping environment that includes a horizontal surface, comprising:

• an enclosure having an outside surface defining an interior volume therein, a sensor portion of the enclosure configured for facing a first direction when the enclosure is rested on the horizontal surface;
• a circuit disposed at least partially in the interior volume of the enclosure, the circuit electrically connected with a power source, a timer function, at least one transducer, at least one user input switch accessible at the outside surface of the enclosure, and at least one environmental sensor disposed in the sensor portion of the enclosure and configured to detect motion in the first direction of the environment;
• the circuit configured to include:
• an off mode wherein power is disconnected from the at least one transducer and the at least one environmental sensor;
• a guard mode wherein the circuit actuates the at least one transducer for a first active time interval upon detection of an environmental change by the at least one environmental sensor, thereafter the circuit deactivates the at least one transducer after a first all-quiet time interval during which no change is detected in the environment by the at least one environmental sensor;
• the mode selected by successive actuations of the at least one user input switch, wherein
• at least one of the first active time interval and the first all-quiet time interval are user adjustable.