The Benefits and uses of a Keepsake Diary for girls Keepsake Diaries: As a girl grows up she experiences many different changes. From her first crush to her first kiss, there are many things that she will want to remember. A keepsake diary is one way the she can keep track of the important things in her life. Since the diary is all hers, she can write down what is important to her. Once she has gotten older she can look back with fondness over what she thought when all of these things first happened to her. If she happens to have a daughter of her own, then she may let her read the diary so that they can discuss important things coming up in the daughter's life.