I want my son to have my valuable collection of baseball cards when I die. How do I make sure he gets it?
The only way you can be absolutely certain that a specific individual gets a specific asset is to give it them before you die.
If you don't choose that option however, you can make your wishes known in many ways: verbal instructions, written instructions, audio or video recordings, or labelling your instructions right on the objects themselves. However, those methods are not legally binding and might result in challenges or disputes. The best way is to make a specific bequest in your will or an addendum that is incorporated into your will.