Today after Mass I saw some friends in front of the altar praying, holding prayer cards. A few minutes later in the church lobby, I asked one what they were praying. She informed me that it was the Mothers' Prayer for Vocations.
I got a card and scanned it to my computer, front and back (please forgive the crooked appearance!). I would imagine that if some men wanted to join, they could do a few substitutions, such as invoking St Joseph as a model for fathers. So here it is! Why not do this at your own churches??