WHEN MAKING A WILL, ADDING A TANGIBLE PERSONAL PROPERTY LIST IS A GOOD WAY TO PROVIDE FOR DISTRIBUTION OF YOUR COLLECTIBLES, FAMILY HEIRLOOMS, ETC.

Arizona law says that a will may refer to a written statement to dispose of tangible personal property other than money.  The list can be prepared before or after the will is signed.  The list can be either handwritten or typed, as long as it is signed, and describes the items and the beneficiaries “with reasonable certainty.”  
What can go on the list?  Here’s the explanation I use: anything you can hold in your hands, from a diamond to a grand piano, except cash money, is tangible personal property and can therefore be included on your list.  
The list doesn’t have to be exhaustive.  The list just won’t affect anything that isn’t on it.
So when you’re making a will, if you have tangible items that you want particular people to have, just make sure that the will includes a provision for a personal property list, then make the list.