So you are looking for a backpack that stands out? The Cosmic Infinity Mirror Backpack is well worth a look. It is a colorful bag with over 80 LEDs that puts on a show everywhere you take it. It comes with a 6000mAh battery, a LED panel with animations, and app control.
The SwiftMatrix app is available for iOS/Android devices. Using it, you can change patterns, adjust brightness, and set a scrolling message to display on the bag.