Just a simple box to hold a half-length breadboard and small components. There are two compartments for batteries (1x AA, 1x AAA), and one big compartment for holding small components or a booster circuit like a joule thief. 3D model available at [ thingiverse.com [http://www.thingiverse.com/thing:930427]

Light up your TARDIS off of a single AA or AAA battery! This design runs off of a joule thief to light up your LEDs off of a single 1.5v battery. It can even run off of "dead" batteries that don't have enough juice to