There is a detailed description of the complex "surgery" they performed originally available on their website, now archived elsewhere, encouraging others to take part in the surgeries themselves. The surgery required some technical skills, tools and precision, but the voice boxes in the dolls were similar enough that the surgery could be reproduced fairly easily in other parts of the country. They outlined the surgery in easy to understand images. After the surgery they would secretly return the toys to shelves, what they call "reverse shoplifting".