If your church or Christian ministry has a unique St. Patrick's Day event or outreach planned, please let us know about it in the comments.
The singles group of the church I attended in North Carolina, would eat out once a month in a restaurant of a different culture and pray for that culture. One time we ate at an Irish restaurant and prayed for Ireland.
If you would like to pray for Ireland, Operation World has a prayer guide for this nation. It recommends prayer for Irish society "be made whole."