Years ago someone told me that one of the greatest things parents can do for their children is to raise them to be polite. He reasoned that in so doing, adults (other than their parents) would want to help them along in life. I thought that was quite insightful. "Please" and "Thank you" go a long way to endearing a youngster to other adult "helpers." Toward that end, here
is a list of materials you might find useful. Good luck, Mom and Dad!