One community member posted a “how to“ on randomizing lights, using the third-party app, Sharptools. At the time of this posting it has a subscription cost of $30/year, so might not be worth it If this is the only function you need, but it’s a popular app for a lot of different reasons, and it does fill some of the gaps that smartthings currently has. It has a very nice visual interface to its rules engine so it’s an easier way to do things than some of the scripting choices. And it runs in pretty much any browser, so it doesn’t matter what kind of phone you have and you don’t need to have a smartthings hub to make it work. It won’t be for everybody, but I did want to mention it since it gives you a lot more control options then Alexa guard.
Here’s the how to thread:
Vacation Lighting & SharpTools
Also, if you have an android phone and you live in the US or South Korea, there is a “no worries when away“ service under the “labs“ category, but apparently you have to manually start and stop it each time, it doesn’t have a geopresence option, so people are saying it’s not that useful. But it’s free and it’s an official feature so it might be worth looking at. Here’s a discussion about that: