I wrote my annual letters. There are two sets. For one set, I write a letter reflecting on the year and then write a letter about my hopes for the next year. I get to read the second letter at the end of the year.
The other set asks questions and then is designed to be put away for 10 years before being read. I like that it prompts me to take a picture and include it with the letter.
This is all made possible by electronic calendars. I have a yearly occurring appointment that reminds me not only to do write these letters but also where the document is located on my computer.