Those dedicated portable music players marked the next evolution of the Walkman and MP3 players. When Apple introduced the iPod Touch, it mimicked the first iPhone in look. So, it's not that much of a stretch to use an old iPhone like a makeshift music player. Aside from music, an old iPhone could also be a portable gaming device using services like Apple Arcade or basic game apps. While it doesn't have an eInk screen, you could also use an old iPhone as a dedicated eReader, downloading your favorite titles from an eReading app to read at home and on the go.