Here are all the results with descriptions
Atari 2600
The Atari 2600 was a game console that rose to popularity in the 60's and 70's. It allowed people to play a ton of interchangeable games. Nowadays with all the new consoles and other systems, this console is all but obsolete.
Boombox
Very few people use this piece of technology nowadays but back in the 70's through the 90's, it was quite popular. It was a device that allowed you to listen to music portably. Nowadays it's pretty obsolete with the introduction of cell phones and other tiny music devices.
Polaroid Camera
This was the most popular way to take photos back in the 70's. You would just snap a picture and the photo would appear right away without having to be developed. While there has been a recent resurgence of popularity, they're still pretty outdated compared to cell phones and newer models of cameras.
Slide Projectors
This was a popular way to view photos and films during the 1950's to the 1980's. It was a pretty simple device to use and you could view it on a projection screen. Nowadays with all the recent technology, it's pretty obsolete.
8-track
One of the most popular ways to listen to music back in the mid-1960's to the late-1970's was by using an 8-track. It was a plastic cartridge that you would listen to music from. It basically became obsolete with newer technology.