I just read an account of Nazis stealing children with the potential to be "Germanized" for the Aryan project.
This reminds me of Islamists kidnapping children to convert them. Muslims also have used alms to entice people to convert, which the Nazis probably did not bother with. I've heard this practice shows a keen sense of economics, with animists in Africa being bribed with far less than Westerners in the Gulf states.