Some of my children loved making a little ring of favorite words. Basically some colored index cards on a key ring. Crazy creative, right? lol Words like Love, Mum, Papa, Grammie, Worm, Ice, Cookies, Dog's Name, Cat's Name, Fish, Beach etc. Really sweet.
All my kids also liked having fat stetch books (with the wire rings binding) where they could draw and then ask me or their dad to write down their stories.
Some children like to label their coat hooks, the dog crate with the dog's name, the Lego cubbies etc. Pretty soon, they can easily 'read' their name, and Mom and Dad etc, which is delgihtful to some kids.
You can also have a family mail box-- a show box where you leave love drawings and notes for each other.