A lot of us users of a certain age go back to a time when buying new storage media required a mortgage, . . .
Oh yeah, I remember 3.5" and 5.25" floppy disks. And believe it or not as a college freshman I learned FORTRAN on punch cards. And get this . . . I still have the slide rule I used in High School Chemistry class. The teacher had a gigantic 6 foot long Pickett slide rule hanging from the ceiling as a teaching device.
The Gen Z kid says "Slide rule? Is that related to the trombone?"

The one thing I never used but now whish I had is the hand-crank mechanical calculator. I understand that was quite an invention.