The 10 Best Amazon Echo Accessories - From a $20 Security Camera to a $350 Robot Vacuum The Amazon Echo can become even more useful when paired with third-party tech Brandt Ranj, provided by FacebookTwitterEmail The Amazon Echo has change the tech world in a lot of big ways. It popularized smart speakers, set the bar for voice recognition and AI, and normalized the concept of talking to a gadget. Amazon has also committed to improving the Echo, and making Alexa (its smart assistant) even more capable. While the Echo is great on its own, connecting it to compatible smart-home accessories makes it even more powerful. Suddenly, you can control your garage door, or make your home more secure without touching a button or reaching for your phone.