The Catholics have seven sacraments, one of which is going to confession. Another is "extreme unction." This is a blessing given at your death. Other Catholic "things" include the observance of Ash Wednesday, the first day of Lent. You get ashes on your forehead. Catholics are also not supposed to use any artificial kind of birth control methods.
Rosaries, Mass, Hail-Mary, Priests, Nuns, Confession, Confessional booths, private schooling, The Pope, The Vatican, Fish on Friday, guilt, corporal-punishment, abstinence before marriage, immaculate conception.
