I still have an original square Discman, which worked great back in the day as long as you didn’t move it around too much. Which I didn’t. Most of the time it sat on a shelf next to a big generic boom box. It was a sop to finances, as the Discman was cheaper than a full size component and was portable.

Later I bought a white and orange Discman that played MP3s and it really did play through bumps and jolts quite well.

Both of them are in a box of cables and peripherals I don’t use anymore. Should get them out, see if they work, and contribute to eBay.