I am involved in several churches.
One thing we have done in Lent and Advent is give out prayer cards to help people pray. One time we listed all the churches in the area on the card and prayed for each once a week (several each day of the week). We also sent copies out to all the churches in the area to help them pray for each other.
Another time we got people to pray for the church. Here are copies of the prayer cards for a church (with Methodist and Anglican options).