I have an Amazon echo that is a glorified weather reporter and cooking assistant. It's pretty useful for setting timers and for calculating conversions for measurements. I also use it as a white noise machine for bed time.
I do get the random interruptions where it some how responds to some random conversation I am having and I promptly cuss it out. It's probably foolish for my privacy, but I don't actively plan crimes in front of it, but who knows how it might bite me in the ass in the future.
In Tokyo they had a Stranger Things themed restaurant for a while. Pop up culture is pretty big in Japan so it worked out great I suppose. I don't expect it to work in other places nearly as well. Especially if it's a permanent structure.