The ornamental design for a hairaccessoryorganizer, as shown and described.
FIG. 1 is a front perspective view of the hair accessory organizer showing my new design;
FIG. 2 is a front plan view thereof;
FIG. 3 is a back plan view thereof;
FIG. 4 is left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top side view thereof; and,
FIG. 7 is a bottom view thereof.
The broken line showing in the figures is included for the purpose of illustrating portions of the hair accessory organizer and form no part of the claimed design.