After loosing a tooth, our kids put in in a glass of water at bedtime. They are so excited to see what color the tooth fairy is. Sometimes I swear they are more excited than Santa at Christmas time. It's been every color from pink to green to purple. On Kirsten's last tooth, it looks like she collected some real fairy dust. She was just a little too excited and woke us up at 6 am in the morning to spread the news.