The stars on the Office level are a lot easier to find. The first is immediately after the first fork in the road. Follow the right path and go straight. Enter the small door or opening in between the books and the computer. The second piece is immediately after the Hotwheels bridge. Go slow through the left hand turn immediately after that bridge. Enter another small opening in the books on the left. The third piece immediately follows the second fork in the road. Take the right path at the fork and go slowly forward. Enter the hole in the yellow pencil box on your left.