The ornamental design of a blank for an articleorganizer, as shown and described.
FIG. 1 is a top plan view of a blank for an article organizer showing my new design, the bottom being a mirror image thereof;
FIG. 2 is a top plan view of another embodiment of a blank for an article organizer showing my new design, the bottom being a mirror image thereof; and,
FIG. 3 is a top plan view of a third embodiment of a blank for an article organizer showing my new design, the bottom being a mirror image thereof.
The broken lines shown are directed to environment for purposes of illustration and form no part of the claimed design.