Building block storage box

Description

FIG. 1 is a perspective view of a building block storage box in a collapsed state, showing my new design;

FIG. 2 is another perspective view thereof, shown in an expanded state;

FIG. 3 is a front view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a back view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a top view thereof.

The broken lines shown on the drawings depict portions of the building block storage box that form no part of the claimed design.

Claims

The ornamental design for a building block storage box as shown and described.