Split into groups of 5-12 people. Give a role of toilet paper to someone in the group and ask them to tear off as many sheets as they normally use, then pass (or throw) the role to another member of the group to do the same. Don't explain the purpose at this point - it just adds to the mystery! Continues until everyone in the group has torn off some paper. You'll find some people will take only a couple of sheets, others will reel off heaps! (You may need multiple toilet rolls)
Once the roll has been around to everyone, you explain the next part. For each piece of paper people tore off, people have to reveal one fact about themselves.
This game is great to use as an ice breaker as it encourages sharing, gets people laughing, and breaks down barriers!
If you're not up for using toilet paper, another option is to use pieces of string cut to different lengths. Participants wind the string around their index finger whilst introducing themselves and must continue until they run out of string