Please. Why do we want to bring back an obsolete bad-sounding music storage format? Those who are nostalgic for cassettes never had to deal with them when they were the only things we had to use to make portable mixes. Still, people keep trying.
A couple of people have pointed us to ELBOW, a device created by an art duo (there’s your first clue) called BrainMonk who was bored of smart devices and touch screens. By engineering cassette player down to its absolute mechanical essence, they came up with this.
You mount it on a cassette thusly.
Just plug in your earbuds and go.
Here’s a video from their Facebook page.