Have you kept any old certificates?
Sadly my Mum didn't keep many of the few certificates I got when I was growing up so I haven't got those mementos that are also great memory joggers for events that were significant in my life.
I tried to keep all sorts of stuff relating to my children's journey through childhood and adolescence so that there is some sort of record of the milestones in their lives. Now I never seem to throw anything out although I am starting to scan and discard some things like tickets and programs.
But I keep and treasure the certificates I get from various events. I will treasure the latest addition to my collection, a Certificate of Appreciation from The Central Coast Family History Society that I was given after presenting a session to them on the weekend. The certificate has been scanned and the original placed in my genealogy folder.