Museums - particularly local/folk museums.

As a kid my dad would drag me around them. I was born fairly late in his life, so he would be reminiscing about various things on display but I had no context for them and so no real interest. Maybe I would find a couple of the large items something to play with or on etc.

Later they started to be come more interesting, once I developed an interest in history and then they started to have a value as a resource on low/intermediate tech solutions to actual things I was doing. And then I started to notice items in the displays that my grandparents and then parents actually owned and used…

These days I am starting to find things on display that I used myself at the start of my working life.