I used to work at a place that digitized stuff like old film, microfiche, CAD cards etc. Was cool to see what people had saved up.Unfortunately I did not do as my mother & do a diary.
But, fortunately she also kept her father's 9.5 MM film home movies from all the way back to his (and my grandmother's) 1931 weeklong snow skiing wedding and honeymoon in 1931. It has now all been digitized, something that I am hoping to do with my music that I have from my father's born date in 1927 (what his mother was listening to up to now).