Moto 360 (2nd Gen)
Possibly one of the best accessories for the Moto X is Motorola's own smartwatch running Android Wear. The new 2nd Gen Moto 360 is better than ever. Comes in two sizes, tons of customization options, has better battery life than the original, and is an extension of the Moto X smartphone. Check out our hands-on, and then buy one. This is by far the most expensive accessory we'll be recommending today.