"My people have committed two sins: They have forsaken me, the spring of living water, and have dug their own cisterns, broken cisterns that cannot hold water." - Jer 2:13

Pet suggested that we have a time of sharing.. especially for the campers to share their experience with their friends.

My suggestion:

Ask them to share their camp experience. If your group is small, join with another so that all may be edified.

For those who have come back from camp. Is their relationship with God better than before - or back to 'normal'. They will likely need some encouragement. For all - is their relationship with God absent, ritualistic, or alive?

Ask them to share their hopes - how they would like their relationship with God and church to be different. Have each one pray for this.