Sylvia Tilly's yearbook
A yearbook was an annual publication associated with educational institutions, such as schools and universities, which documented the members of a graduating class and their accomplishments. Each student of a class would get one. While historically yearbooks were actual books, by the 23rd century, the term referenced a computer file.
Messages from other students would be included in the yearbook, either in written or video form. Sylvia Tilly had a yearbook from her time at Musk Junior High School, which contained a message from fellow student May Ahearn. (DIS: "New Eden")
From the 22nd to the 24th centuries, Starfleet Academy put out a yearbook that featured photographs of students. (ENT: "The Seventh"; TNG: "The Game")