A storage unit comprises sidewalls and a base. A lid is connected to one of the sidewalls and movable between a first open position and a second closed position. The sidewalls and base defined an inner space. The storage unit may include integrated wheels at or near the confluence of the base and at least one of the sidewalls for rolling the storage unit over a surface. Organization components are provided for selective and releasable placement within the inner space for compartmentalizing the inner space into a desired configuration.