• Identifying information, an updated photograph and a detailed description of what the child was wearing.
  

• If you have a fingerprint card or DNA samples, please make them immediately available.
  

• Detailed Description of what the child may have taken with them or had with them when they disappeared. This would include money, luggage, photographs and letters, maps or travel brochures.
  

• Everything in terms of routes or destinations that your child would be familiar with including individuals they may visit and play locations.
  

• Names, addresses and phone numbers of their friends, acquaintances and anybody else they would potentially have been in contact with.
  

• Make your home computer available to law enforcement so they can check browser history, document history, messenger contacts, email flow and any other clues that might be learned from your hard drive.
  

• Go through the child’s belongings and give law enforcement any diaries, letters or other unusual documents that you might find.
  

• Check clean and dirty clothing for anything that is unfamiliar or may otherwise give you a clue.
  

• Check most recent phone bills for anything out of the ordinary or that you are unaware of.
  

• Look for anything that will give you a clue as to your child’s state of mind including input from friends and neighbors. It might help you and law enforcement determine if your child has been stolen, lured or is a runaway. Remember, you are trying to limit the possibilities.
  

• You should also contact your child’s doctor and dentist about releasing medical and dental records.
  

• Collect scent articles like dirty underwear, socks, and pajamas and store them in separate plastic bags as soon as possible for potential search dogs. Do the same with hairbrushes and toothbrushes. Make these articles available to law enforcement and encourage them to facilitate search and rescue efforts if that option is viable.
  

source: Klass Kids