This is a diskette, aka a floppy disc.
It stores information.

This is a cassette tape.
You can store music on it.
It was first developed in 1963, not the American Civil War which was fought between 1861 and 1865.

This is a fascinating device from a bygone era that lets you manually roll down the car window.
It takes some getting used to.
You have to put your hand on the handle.
And then turn the handle to open the window.
The best part is, if you turn it the other way, the window closes.
Much wow. Such mystery.

Calls, text messages, and mobile internet all used to cost more money than today because cellphones were considered a luxury item, while service providers incurred greater costs than nowadays.

Cellphones could store very limited amounts of data.
While it seems funny that your phone couldn't make any more space for extra messages, consider how quickly photos and videos fill up your brand new smartphone.

This is a VHS tape.
You can store movies and video recordings on it.

This is an overhead projector.
It projects things over your head.

This is a public payphone.
You used it to call people.

This is an iPod.
It plays music.
The very first iPod came out in 2001, not 1955.
The iPod pictured appears to be an iPod Nano, the first of which were released in 2006.

I still don't know how to burn CDs and I'm not a member of Gen Z.
On a theoretical level, it's clear that you copy information that's on your PC onto a disc. On a practical level, I end up messing up the disc and accidentally deleting the data I meant to copy over from the computer.

This is a stereo, aka a boombox.
You use it to play music and be popular.

This is a beeper, also known as a pager.
It can be used to transmit short messages or, in some cases, voice recordings.