When he was in first grade, O lost his first tooth! It went from very slightly wiggly to completely out in less than three days. You guys! This printable tooth fairy letter might be my favoritest thing ever (that’s a word, right?!) Make a cute little box to hold a lost tooth out of an old dental floss container and print a free printable tooth fairy letter from the desk of the Tooth Fairy (you can personalize it)!