I call this activity "Secrets." Secrets is a collaborative, literature-based writing assignment that gets kids talking about Tim O'Brien's story "Speaking of Courage" from the novel, The Things They Carried.
To make Secrets happen, students should be placed into small groups. I have found that groups of 3-4 work best. Each student group receives a question sheet to begin the activity. Student groups get 3-5 minutes per question to discuss and record their answer on a small piece of paper.
At the end of the time allotment, students should fold up their answer so it remains a "secret." Before students return to their home station (where the began the activity) stop the activity so students have 1 question that they have not responded to yet. At this station, students get to open all of the "secrets" and choose the answer they feel is the best. This only works when student groups can't choose their own answer :)
Save time at the end for groups to read their prompts and best "secret" responses. Groups that wrote the winning secrets at each table should take credit for their work. I usually make this competitive by keeping track of secret wins per group and then awarding extra credit points.
Be creative and enjoy!