Abstract: Various improvements for portable containers such as luggage. Various systems, devices and methods are provided for increasing functionality for luggage and other portable containers, for example for personal travel. These improvements include a power box for portable energy provision while traveling, that may optionally be integrated with a suitcase; a portable document handler for convenient and secure transportation of documents; and an elastic strap designed to better secure luggage, as well as optionally providing a visual identifier for a bag. These improvements may optionally be used together or separately.