Jawbone up - stopped working because the company went out of business. Technology you can’t actually control by yourself isn’t calm.
Roomba - phones home, requires an app for automatic functionality, automatic functionality stops working eventually if you take away its ability to phone home. Once again, a device that you don’t actually control isn’t calm.
As a corollary to this, any technology which requires an app to function isn’t calm.
If the threshold for examples is that every aspect of the product must be designed well, require minimal user attention, respect privacy, fully controlled by the end user, and does not require a companion app then the list would be significantly shorter and probably less informative. (I'd struggle to come up with any well-known digital products that fit the bill.)