We spend so much time talking in composition classes about writing as process, I often choose to start the semester with the notion that writing is valuable as artifact as well. Here are a few examples from the family archive:
This is, of course, a proto-document from early childhood (when my oldest daughter was maybe age three and a half): the letter to Santa Claus. Unfortunately, I've lost my ability to decode this fully, but I can make out a few words (people, very much) and, I think, most of the closing (by the way, say hello to the elves from me). Relevant topics: audience awareness, exigency, formal conventions dictated by genre, written vs spoken language (as in, usefulness of inter-word spacing)
A collaborative writing sample comes from me and my middle daughter, just before her seventh birthday:
Finally, here's a birthday card sent to my youngest daughter from my parents, just a month before my father's death (note his unfailing emphasis on the importance of reading and writing):
(In handwriting that is so moving to me, dated 9/22/02, he gives his familiar polemic about the value of reading and writing:
Your Ma tells us that you are a very smart girl, and interested in Art, that fine but never forget to read a lot when young, because it has been one of my greatest pleasures.
Another suggestion; I think it would be very good for young people like you to keep a ledger. Nothing fancy, you could just jot down important things to you each day, this would be of great interest to you in later life, and might even lead to a book!
With our very best to you always, and have a happy Day.