Give them each a blessed green scapular or, if you think they will probably throw it away, place one in each of their rooms where it won't be found. I taped a green scapular behind the head board of the beds of each of my family members. My brother's friend converted to the Catholic faith - I believe because of the the green scapular. She was born Orthodox but had become Protestant in her practice and beliefs. So I gave her a framed picture of Jesus and hid a green scapular inside the frame behind the picture. She placed the picture in her room. One year later, I found out from my brother that she had become Catholic!