Xiaomi has one interesting product that can be used together with their series of power banks. It is a USB powered Led lights and can be use on anywhere, powered by any devices with USB port.
Technical Specs
Unique bendable design, also has light weight
Ultra bright with low power consumption
Rated voltage: 5V
Rated power: 1.2W
Material: Silicone
Net Weight: 16 g / 0.56...