The ornamental design for a laddercushion, as shown and described.
FIG. 1 is a top right perspective view of a ladder cushion showing my new design in an unattached configuration;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a top right perspective view of the ladder cushion in an attached configuration thereof.
The article is shown with a symbolic break. The appearance of any portion of the design between the breaks forms no part of the claimed design. The broken lines depicting the exemplary ladder in FIG. 8 depict environmental subject matter only and form no part of the claimed design. The broken lines shown on the ladder cushion depict stitching and form no part of the claimed design.