Joseph: 3.5″ type on my Mac, but I did use other computers with both. I even remember a teacher in elementary school showing us punch cards (see, I really am ancient Joseph). Does anyone remember ZIP drives and JAZZ drives? The answer to the memory storage problem! ZIPS, if I remember correctly, could be used for both PCs and Macs so it was a good way to transfer data between different users.
When I got my Mac in the early 90s people were starting to get portable cell phones, but it was not so common. The cell phones were so cumbersome at first that they were really not all that portable. My parents gave me one to use when I traveled alone places in the car, since it was only used for that purpose, I still considered it a car phone. That changed pretty quickly though – the goal became to make them as small as possible, credit card like. Now ironically the trend is reversed, since you actually have to see the screen on an iphone.