And if your building is open construct a prayer room or prayer corner where people can come and be still, write their prayer request, browse through prayer resources, scribble their fears frustrations and joys on a graffiti wall. Have plenty of posters and displays about the Gospel message; plenty of different translations of the Bible, a cheap CD player and some CDs, paper and paint and crayons and clay.....
If your building is supervised have a supply of candles to be lit, an even more interactive prayer station.