Well, first of all, elves are very shy creatures. They don't like to be seen by humans, so you'll need to find a way to attract their attention without scaring them away. One way is to leave out a plate of cookies near a tree or other secluded area. Elves have a sweet tooth, so they'll likely come out to investigate. Once you've got their attention, be sure to be friendly and respectful. Elves are known for their kind and generous nature, so if you treat them with kindness, they may just decide to stay with you.