A device for lulling infants to sleep comprising a pillow with a receptacle and closure, wherein the middle portion of the sides of the pillow are curved inwards to form four corner sections, and wherein the corner sections of the pillow are puffed up compared to the rest of the pillow, so that the pillow can be easily used in conjunction with cradles, bassinets, strollers, and similar baby gear;. The device further comprises a battery-operated sound/vibration generating instrument received within the receptacle. The instrument can be operated to produce either sound or vibrations, or both. The sound comprises a simulated mother's heartbeat or a lullaby.