I use perforated business cards, and usually, I have them laminated so that they can hold up. My parents also use this address to contact me. I log in first, and then the kids handle mail from there. Many of the teachers with assigned times will allow me to use their designated time. Luckily, many of my kids have Internet access at home, and so we can discuss URL's to look up and search terms to use, and the kids do some Web research at home.
Teacher needs an answer-sheet with the student's names.
Then each student gets a copy of the answers to the 3 questions for the whole class. Their challenge is to ask their classmates questions to find out who wrote which entries. It has a time limit. Since many might have chosen the same professional aspiration, they need to keep asking until they line up all 3 questions with the right respondent. Nobody used the other 2 questions, except when they were asking someone who wanted to be a teacher, and there were 4 others who also wanted to be teachers.