I claim the ornamental design for a plush toy, as shown and described.
FIG. 1 is an exploded top perspective view of a plush toy, showing my new design with removable discs of the design exploded away;
FIG. 2 is an exploded bottom perspective view thereof, illustrated with lower wings in a raised position;
FIG. 3 is a front elevational view thereof, illustrated with lower wings in a lowered position;
FIG. 4 is a rear elevational view of FIG. 3;
FIG. 5 is a right-side elevational view of FIG. 3, the left-side elevational view being a mirror image thereof;
FIG. 6 is a top plan view of FIG. 3; and,
FIG. 7 is a bottom plan view of FIG. 3.
The broken lines showing an arm band attachment in FIGS. 1 and 2 and a pocket closure tab on the top of the design, and a pocket in FIGS. 2 and 7, depict environmental matter and form no part of the claimed design.