Trinity Shamrock Ornament Craft Kit. Make your own 4 1/2" shamrock for St. Patrick’s Day! Includes a printed card about the Holy Trinity: Just like the leaves on each shamrock I see, there are three parts to the Holy Trinity. First is God the Father, then Jesus, His only Son, and the Holy Spirit together as One. Foam. All craft kit pieces are pre-packaged for individual use. Kits include instructions and extra pieces.