I tried a few of Amazon's Echo devices. I didn't spend much on them except for the big speaker. It used to be ok, but now it asks me to sign up for Unlimited music every single voice prompt. This exactly ended my desire to get anything else made by Amazon.

I used to have an Ecobee thermostat. A good idea, but it wouldn't work at all without a connection to their server. Their server uptime was a complete joke which made my thermostat useless.

I also had a few smart plugs for lamps.

I spent way too much time fiddling with all this garbage, so I trashed it all.

All these "smart" devices are anything but.