The ornamental design for a lockerorganizer, as shown and described.
FIG. 1 is front view of a locker organizer;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front left perspective view thereof;
FIG. 7 is a right rear perspective view thereof;
FIG. 8 is a right rear perspective view thereof; and,
FIG. 9 is a top view thereof.
The broken line showing in FIGS. 5 and 9 are for the purpose of illustrating the environment of the design only and form no part of the claimed design.