1. Make a list of 15 characters first, and keep it to yourself for the moment.
2. Ask your flist to post questions each in the screened comments.
For example: "4, 6, 12, and 15 are starting a band together, what is their name and what kind of music do they play? Also, who's the lead singer, and what instruments do the others play?"
3. After your flist has asked enough questions, round them up and answer in a separate post.
Please keep your questions at least potentially gen in nature.