Ask every parent in the contemporary era and they would confess to having played the tooth fairy game with their children. For those, who have been living under a rock and don't know what it is, the tooth fairy game is when you tell your toddler to keep their tooth under their pillow, so that the tooth fairy can come in and exchange it for a dollar.
Now, an interesting way to make this game more fun is to put some tooth fairy dust on the dollar note you have hidden under the pillow. Children will really fall to the trap when they see fairy dust from the fairy that came to exchange their tooth with a dollar note. This would add to the excitement and will make them believe in this really exciting drill.