[header] How to be the tooth fairy [title] Decide where to leave the tooth. [step] Many people choose to leave the tooth under a pillow. You can even use a special tooth-shaped pillow, if you can find one, or a pillow with a pocket sewn in it to hold the tooth. 
[substeps] You can also ask the child if he or she would rather leave a tooth somewhere else. Another common place to leave the tooth is in a glass of water.