Last year I found an easter egg that my father left for me in his address database. (He died in 2013, but was afflicted with Alzheimer's for the last 10 years of his life.)

From my father's address book (a DbaseII file that was last updated on December 15th 1992). This was a note associated with my contact info. Found on February 16, 2020.

Hi there, son. I doubt if anyone else will ever see these memos, but if anybody ever does, it will have to be you because you would be the only one with enough computer savy to dig them out. Hope you are doing well--and if I'm not still in this dimension when you see this--have a drink to your old dad's memory. Having you around gave me most of the pleasure in our family's growing up period! Live long and prosper...............