I have had time to test cases and have found two on Amazon that I like.
ProCase Portable Hard Drive Case for Canvio Basics Western Digital:
This case is designed to hold a portable drive and is only slightly bigger than the device, making it great for no frill’s transportation. It can hold the RetroStone 2 and a small charging cable. It is a very tight fit, so a charger can’t be included.
Images:
https://drive.google.com/open?id=1pRnqL ... M1PYzlQvUV
Casemaster Sentinel EVA Foam Shell Dart Case:
This next case is actually designed to hold darts and just so happens the RetroStone 2 fits inside with room for accessories. It can fit the device, earbuds, charging cable, and a wall charger.
Images:
https://drive.google.com/open?id=1a3izj ... 4IiZO8aMWQ
Sorry for not including links to the cases. I use Amazon Smile and did not want to make this more complicated than it needs to be for those who do not use smile.
RetroStone 2 Cases
Re: RetroStone 2 Cases
Yep, it's the same type of portable HDD case as the one I use.