Since the cable can fold somewhat, I'm wondering if a padded nylon laptop case would also work, like this one on Amazon:
https://www.amazon.com/AmazonBasics-NC1406118R1-17-3-Inch-Laptop-Bag/dp/B00DUGZFWY/ref=sr_1_7?s=pc&ie=UTF8&qid=1541049457&sr=1-7&keywords=laptop%2Bcase&th=1