3. Discman (1984)
When the cassette tape got put on the backburner in favor of the CD, technology had to enhance with it. Thankfully, the Discman came through shorty thereafter and helped increase the interest in CDs in favor of cassettes. The ‘90s proved to be the peak period of the Discman — referred to officially as the CD Walkman by that point — eventually becoming a huge part of pop culture from that time period. It may have been a tough choice figuring out which albums to bring with you, but we bet it led to a lot of friendships being made over similar music.