Many different forms of device customization exist for jailbroken iPhones and iPads. Whether you’re trying to make the device behave differently than it does out of the box or you’re looking to personalize the user interface with themes, there’s a little bit of something out there for everyone.
One great example would be a newly released and free jailbreak tweak dubbed BatteryBuddy by iOS developer Litten, which provides the end user with a much cuter battery indicator in the Status Bar.