Hi Marcy; I am of German descent (maiden name is Nagle); so about the only thing I do is, if I remember, wear green and send cards to the grand kids which I have not done this past year. At the end of March we have my husband's brother and family for dinner to celebrate his birthday, and I usually add shamrock type decorations as a centerpiece.
However, I DO have two very close friends who are Irish. My best friend, Jackie, has six grown children, and 14 grandchildren...and they had a HUGE family party at one of her daughters houses. I would say about 40-45 people attend, so they spend a lot of time preparing food and decorations and they all dress festively.
My other Irish friend is a member of the Hibernians and she marches in the parade in our area every year and she also goes to a restaurant with friends to celebrate.
So even though I do not actually 'celebrate' this special day, I feel "exposed" to it because of the close contact with my two friends who always share with me what a good time they had.
Thanks for this great question. Sparklea :)