The first media storage I used was my cassette tape drive on a Commodore 64, same kind of tapes people used in the Walkman. I played Sargon II, an old chess game. It's also where I stored the very first piece of code I ever wrote which didn't disappear with my RAM after I hit the power switch.
8 in floppies were mostly used on Heath Kits at that time. 5.25 were my great technological advancement. I still remember "Load <filename> ,8,1" with some nostalgia and cheating the storage vendors by punching a small hole in the side of my floppies with a holepunch to turn single sided disks into double-sided disks which doubled the storage.
Yes, you would pull the disk out, flip it over, and put it in upside down. It was like having a second disk.
3.5 in disks were quite the advancement. Solid case made them easier to protect, much faster, better storage, more reliable, and this is what most people think of as a floppy disk these days. I was still using them to work on servers in the late 90's because they were still a convenient way to boot a machine which was having hard disk problems.