Longer answer, if you give up on the zwave requirement, you can get some battery operated dim decorative lights that have an IR remote, then use the Harmony hub or another controller that can be made to work with smartThings and get integration that way. i use this for some battery operated candles.
See the following thread. It’s from a couple of years ago but it all still holds. (The topic title is a clickable link)
And the following FAQ says basically the same thing but with more examples:
