British actor Tom Felton shared details from the set of the Harry Potter films, writes The Independent. According to Felton, a system of fines was developed for child actors.
For every take that was ruined, the young actors received a “red card” which meant the child had to put £10 in a special bag.
At the end of the shooting day, the entire amount of the fines went to charity. “It was a good idea to keep discipline among the kids, but the system didn't always work”, admitted the actor playing Draco Malfoy.
He also remembered that his co-star Rupert Grint, who played the role of Ron Weasley, received the highest number of fines for conduct.
“I believe he put in over £2,500 during the first two films alone, such was his inability to control himself when he giggles hit”, Felton said.