Mission of a Christmas elf for child: tower of books

A Christmas elf, also known as a prankster elf, proposes a mission to a child: he must build a large tower with books he has already read. He must then take a photo of the book tower and send it to the North Pole. The mission should be personalized with the child's first name before printing. For added realism, one can pretend to send the photo to an email address like booktower@northpole.com. This 'elf on the shelf' mission encourages children to read.