Google just announced Android Open Accessory which will allow accessory makers more closely integrate their devices with your Android phones, tablets, and beyond. To show off the feature, they gave the common example of going to the gym, getting on an excercise bike, and plugging your Android Phone into the accessory.
This will totally blow the market wide open for awesome accessories that integrate with your current devices. Think of all the extracurricular interests and hobbies you have that could take advantage of this new capability.
What is your dream Android Accessory?
Visit accessories.Android.com for more!