Feast of the Epiphany
As described on the page on Twelfthnight, this Feast -- also known as the "Theophany" or "Three Kings Day" -- recalls Christ revealing Himself as Divine in three different ways: to the Magi, at His Baptism, and with His miracle at the wedding feast at Cana, all three of which are traditionally believed to have happened on the same calendar date.
For families who hold to traditions involving "the Magi" or "La Befana" leaving gifts for children, the day begins with the wee ones discovering what was left for them while they slept on Twelfth Night.
At today's Mass, there will be a blessing of gold, frankincense, myrrh, Epiphany Water, and, after Communion, a blessing of chalk. Bring small special items of gold to have with you during the Mass, and they will be blessed if they are exposed as you sit in your pew with them (wedding rings, rosaries, an heirloom piece of gold jewelry, for example).
When Mass is over, you will take some of the blessed chalk, frankincense, myrrh, and Epiphany Water home with you, so it's good to bring a container to transport Holy Water and one to put some grains of incense and a piece of chalk into.
When you get home, sprinkle some Epiphany water (otherwise and afterwards used as regular Holy Water) in the rooms of your house to protect it and bring blessings. This Holy Water recalls the waters of the Jordan, and is a visible reminder of Christ's Divinity, of Jesus's revealing Himself as God at His Baptism, when were heard the words from the Father: "This is My beloved Son, in Whom I am well pleased." This rite of blessing the home -- led by a priest, if possible, or the father of the house if no priest is available -- can be downloaded at the following PDF: