Back in my day a floppy disk actually was floppy. And it was 5 inches. Even more to the point, back in my day we actually used disks. 5 inch floppy disks, 3 inch floppy disks, zip disks.
Back in my day we actually used payphones. It used to cost a quarter and I was incredulous when it went up to 35 cents. There was even an urban legend about people placing needles contaminated with HIV-infected blood into the coin slot of payphones. I totally fell for it as a kid and was scared to put my hand in there.
Back in my day I actually had to load film into my camera. I could only take 24 pictures at a time, and I couldn't see what I took a picture of until I got it developed.
Back in my day you couldn't use the internet and the phone at the same time. Your internet connection was cut every time mom unknowingly picked up the phone.