I use this activity as an opener at the beginning of a new term. Ask students to work in pairs. Tell them must complete the badge with the missing pieces of information about his/her partner. Students cannot ask any questions. When they have finished, they must use the appropriate register to confirm their answers.
(If they are beginner students, you should brainstorm which questions we ask about NAME, AGE, ADDRESS, FAVORITE PASTIME ACTIVITY AND NICKNAME beforehand.)
Feel free to modify it if your students need a bit more of challenge ; )