In a popular icon of St. Brigid she is depicted with her handmade cross of rushes. I have one of these crosses on my living room wall and have found it is usually a conversation piece, with one guest believing it was some sort of ninja tool! Legend says that the saint formed this cross in order to minister to a dying man; one version goes like this:"A pagan chieftain from the neighborhood of Kildare was dying. Christians in his household sent for Brigid to talk to him about Christ. When she arrived the chieftain was raving. As it was impossible to instruct this delirious man, hopes for his conversion seemed doubtful. Brigid sat down at his bedside and began consoling him. As was customary, the dirt floor was strewn with rushes both for warmth and cleanliness. Brigid stooped down and started to weave them into a cross, fastening the points together. The sick man asked what she was doing. She began to explain the cross, and as she talked his delirium quieted and he questioned her with growing interest. Through her weaving, he converted and was baptized at the point of death. Since then the cross of rushes has been venerated in Ireland."
I think it's interesting to note that both St. Patrick and St. Brigid utilized elements of nature, shamrocks and rushes, respectively, in order to minister to those seeking the Divine. It calls to mind Romans 1:20, "For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse..." All the firmament shouts His glory, how much more in the hands of His precious saints!
