An ornamentaldesign for a laundry hamper, as shown and described.
FIG. 1 is a front perspective view of a laundry hamper showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The solid line showing illustrates the claimed features within the design for the claimed article of manufacture. The shading is provided to illustrate contour only and is not an indication of texture, or gloss.