We claim the ornamental design for stackable media storage container, as shown and described.
FIG. 1 is a front view of a stackable media storage container.
FIG. 2 is a back view of the stackable media storage container.
FIG. 3 is a left side view of the stackable media storage container.
FIG. 4 is a right side view of the stackable media storage container.
FIG. 5 is a top view of the stackable media storage container.
FIG. 6 is a bottom view of the stackable media storage container.
FIG. 7 is a right perspective view of the stackable media storage container; and,
FIG. 8 is a right perspective view of the stackable media storage container showing a second stacked container.
The design is directed to a stackable media storage container. The broken lines in FIG. 8 illustrate a second stacked container. The broken lines in the figures illustrate portions of the stackable media storage container which form no parts of the claimed design. The broken lines in the FIG. 8 illustrate a second stackable media storage container which forms no part of the claimed design.