Don't buy an Amazon Echo Dot. It is a gateway drug. Now I want to buy Alexa-enabled outlets and switches. And maybe I need this battery pack, so I can move the Dot from room to room with me.
It'll cost me a few bucks up front and it will be great when it works. It also means, invariably at some point, I'll have to troubleshoot something that never fails like an outlet or light switch.