Sketch or print out this basic template, I usually use two sides (10 topics).
At the top of each row is a space for a topic title. Think of some topics that might be of interest to the group and write one in each box.
Topics I use include: work, movies and TV, music, free time activities, whatever town you’re teaching in, sport, food, English, holidays, politics, technology, the environment, etc.
Give a sheet to each student and go round the class brainstorming questions for each topic, invite students to write interesting questions on the sheet.
When you have questions for each topic, put students in pairs and get them to interview each other using the question sheet. This is not a writing activity so students should only write keywords and short notes in the smaller space provided to the side of each topic.
When the interviews have finished (for ten questions this might take around 30 minutes) get the students to report back to the class what they have found out about their partner and encourage further questions to be asked from the class when interesting nuggets of information emerge.