I am going to pick just one thing, and mention only a few upgrades since I was a kid....
The automobile: front wheel drive, air bags, OnStar (gps and phone), rain sensing intermittent wipers, automatic headlights, power steering!, remote entry, air conditioning (we were among the first to get air conditioning in the car when I was in high school. The unit hung down under the dash board. I don't remember the year of the car, a Pontiac Safari Wagon, but I graduated from high school in 1964.)
It would be interesting to go from room to room, or activity to activity to review changes.