In the 90's my family went on a (rare) vacation out-of-state. My parents gave me a camcorder and told me to record everything in the house in case of robbery/fire etc. I meticulously went around to every room in our house and not only recorded video but supplied what I surely thought at the time ... was hilarious commentary.

I REALLY wish I had that video today. While mundane at the time I would have loved to have seen my childhood home, and all our possessions now 30 years later.

When I take photos now, I focus on people (not scenery) but this has me suspect there's enrichment to be had by documenting the "things" in your life.