Your Kindle Fire is a pretty awesome gadget on its own. It is cheap and more than capable of running your favorite applications. With the help of these charging speaker docks, you can keep your tablet charged and get a better audio experience from it:
Grace Digital MatchStick Charging Speaker Dock: a certified “made for Kindle” accessory that charges your Kindle Fire HD 7″ and 8.9″ devices. It has two 3″ full-range speakers with ported bass system.
iHome iK50B FM Stereo Alarm Clock/Charger: plays and charges your Kindle Fire. It has stereo speakers and FM clock radio. It works with iHome sleep alarm app. It has a backup battery too.
ReaderDock F-Station Charging Speaker: it is compatible with the Kindle Fire 1st gen. It features built-in, amplified speakers with volume control. The dock has a power button that turns the Kindle Fire on and off.
These charging docks keep your gadget charged and also serve as speakers for it. Whether they will be compatible with the Kindle Fire 3 is another story.