10 smart light bulbs that work with Amazon Echo and its virtual assistant, Alexa

If you think using your smartphone to turn on your lights is cool, you'll flip when you can do that (and more) with just your voice. In fact, when I reviewed the Amazon Echo last year, I predicted a lot of people would buy more than one Echo so they could put them in multiple rooms. Amazon was smarter than that. As soon as the company realized it had a hit product, it came up with less-expensive versions: the Tap, the Echo Dot, and most recently, a revamped Echo Dot. The Tap has a less-expensive speaker, and the Dot isn't designed to play music at all, but both can summon Alexa, Amazon's cloud-based virtual assistant.