Can you make a tape recording? It would be nice if you told them how much you missed them and everything, but it would also be a nice thing for them to keep. I have keep silly things like phone messages my daughter has left and I love to listen to them. Her voice has changed so much as she's got older and it takes me right back too when she was wee when I hear her cute voice from years ago. You're a very thoughtful girl Lizi, and your parents are lucky to have you :) x