The invention herein relates to a container device and system with an adjustable base and a method of adjusting said base within said container. The device is comprised of a hollow container, a platform and a rotating key with slit opening. The key is nested between the container and the platform wherein the slit opening of the key is sleeved over protrusions extending from the platform. The protrusions interconnect with the container by matching threaded linings along their contacting surfaces. Rotation of the key causing the platform to move in the same direction along its threaded connection with the container, and therefore lateral movement along the length of the container by travel along said threaded lining.