My Grandfather was born in 1899 and passed in 2000. He did mention some of the changes he saw. The one that just jumped into my mind was he mentioned the wooden sideways in Calgary and all the changes he saw over the years.
I have my first purchased name brand computer an Apple II computer. I often think about seeing if it still runs. I have also been thinking about selling my vinyl record collection.
It must have been an exciting time for them to see such change, and for the better, in their lifetimes. I saw the Ferrari movie yesterday and it's amazing to think Enzo Ferrari was born in 1898 and then to think if what he achieved, the advancements in automobile's over that time. Incredibly to think of really, same as your grandfather.