Sometimes a good specific list will guide a prayer time (e.g. Missionaries or School is Starting).

Other times a specific question will be the spark (e.g. How have you seen God at work?  Or What Bible verse would you like someone else to pray for you?)

A good direction can be helpful, like “Write down three reasons that stand out to you right now why God is AWESOME” or “Note the ways you know Jesus is better.”

A classic prayer leading technique is to read a psalm and let the participants mine the verses for prayer.