Some Creative Ideas For The Format of An All-Night Prayer Vigil
Consider dividing the room that you are praying in into different sections, and having boards that people can gather round with various prayer points on. These stations could have their own theme e.g. prayer for the church, prayer points for missionaries associated with the church etc.
Create a place where people can write their own prayer requests to God on. This way everyone can share in each others prayers - even those that might struggle with praying outloud.
You may wish to combine your night of prayer with fasting food. If so, why not break fast with a breakfast?!
24/7 prayer room
24/7 prayer is a world wide movement for prayer and justice. It encourages churches to prayer non-stop for a whole week, and to dedicate a room for this purpose. People can book themselves in for timeslots through the day and night to come and pray for an hour or more. 24/7 have produced this useful page about creative ideas for prayer rooms.