From YOUCAT, fact 272:
272: What are sacramentals?
Sacramentals are sacred signs or sacred actions in which a blessing is conferred. [1667-1672, 1677-1678]
Examples of sacramentals are holy water, the consecration of a bell or an organ, the blessing of a house or an automobile, the blessing of throats on the feast of St. Blaise, receiving ashes on Ash Wednesday, palm branches on Palm Sunday, the Easter candle, and the blessing of produce on the feast of the Assumption of the Blessed Virgin Mary.