Every year, on my children's birthday, I write them a letter. I figure by the time they are 18 it will be quite a book that they can look back on and see how they've grown. I also think it's important to have something from Mom that is handwritten, in the unlikely event something happens to me they will always have these letters to hold onto. Here is Capper's letter for this year:
If you are unable to view the document due to screen size you can view is via GoogleDocs here.