A mobile robotic device with a conveyor that is configured to link up with another conveyor of a second mobile robotic device is described. In this manner, the mobile robotic devices may provide integrated, flexible conveyors and the ability to link conveyors to make an aggregate conveyor of any shape or size. Moreover, the mobile robotic device is configured to receive a conveyor from a storage unit and move the conveyor to another point within a physical space. The mobile robotic device also has the capability to rotate the conveyor, when docked, about the axis of the mobile robotic device (e.g., for sorting and other operations).