Remote control for the TV.
TV....it was 1955, my Dad had heart trouble and was confined to bed. He called me in there and asked for the phone book. Looked up a number of some place that sold TVs. Asked Mom to order one. We were the only ones in the neighborhood that had one and our living room was a screening studio. We got one channel and it was black and white and out of focus, but we were glued to it.
Color TV. First image I saw was green lasagna.
Paved roads (1973) . You can still find a gravel road if you look.
Cell phones....starting with transistor radios.