This is a quick little mixer for those times when you have a lot of people who don’t know each other.
Form a circle and have the players count off “Odd” or “Even.” Players should learn the names of the people to their right and to their left.
Pass a ball around the circle while playing music. When the music stops the person holding the ball must introduce the people to her right and left. After the introductions are made, have the Odds move clockwise one person and the Evens move counterclockwise one person (practice this a couple times before starting the game.)
Keep the game going a few rounds until you think a sufficient number of people have been introduced.
To make things more lively you can have the players bat a beach ball back and forth. In this case the last person to touch the ball when the music stops is the person to make the introductions.