The Companion Cube Pin is a pin available for any Steam users who purchased Team Fortress 2 and pre-ordered Portal 2 or played all the Potato Sack games which was an indie bundle on Steam. It is available in Red an Blue. It is for all classes.
- A fifth Vintage Companion Cube Pin was awarded to another player for unknown reasons.
- Player Vulcnor, upon winning a charity auction for Child's Play, received a Unique quality Companion Cube Pin.