Stars Nicole Kidman and Daniel Craig introduced a 'swear box' on the set of their new film THE GOLDEN COMPASS to avoid corrupting their child co-stars. Adult castmembers were forced to dip into their pockets every time they used bad language to protect the innocence of youngsters such as 13-year-old newcomer Dakota Blue Richards. Craig says, "It was worth every penny. It cost me a lot of money but it was good. I had to pay a small fortune. "It became a joke after a while - sometimes Dakota would be on set and you wouldn't know it and you'd hear, 'It's another pound.' "But I get a big kick out of working with children because you've got to keep them enthused and it's a long day."