Cool but doesn't the Apple Watch have all kinds of sensors to make it work against your wrist? Putting in this case will kind of remove the point of all those nifty hardware gadgets.
If I’m reading your comment correctly, most if not all of that can be turned off. Turn off the passcode, and it no longer cares if you’re wearing it or not (“wrist detection “ is just to save you entering the passcode). Apple Pay and some other stuff won’t work, but if just want an iPod/tiny iPhone, it should be functional enough.