Another tradition dad started was the green sparkling apple juice. He would pull out mom's fancy wine glasses and pour the sparkling juice into it. Lo and behold. . . it turned green. He told us it was because he was Irish.
You need a bottle of sparkling apple cider (or apple juice, white grape juice, etc. Something without color.) You also need some wine glasses and some food coloring.
The night before, put one drop of green food coloring in your wine glasses, right in the center in that little well where the stem attaches.
Happy St. Patrick's Day!