Kiddush is performed at the beginning of Jewish Sabbat and Jewish festival meals. The purpose of the kiddush is to remind Jews of the sanctity of the day, one must "remember it" by making arrangements specifically through the kiddush ceremonty.
It is customary to put the wine or grape juice used in the kiddush ritual into a decorated goblet called a kiddush cup. Kiddush cups are often given as gifts at a child's bris, bar-mitzvah, bat-mitzvah or wedding.