This activity is a great activity to do when reviewing the 3 different types of symbiotic relationships. I have my students do this activity as an intro to my class a few days after we have learned about symbiotic relationships. I have the students select a sheet of paper from a jar as they come into my class.
This activity can be used individually, as a group, or as a station. Though I haven't used it as one, this would be great for a day of review via stations.