The ornamental design for a decorative cushionmassagedevice, as shown and described.
FIG. 1 is a rear perspective view of a decorative cushion massage device;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is an enlarged perspective view of the chord attachment connector portion of the decorative cushion massage device, identified by reference numeral 8 in FIG. 1, and as viewed from the open end of the connector portion; and,
FIG. 9 is an enlarged rear perspective view of the chord attachment connector portion of FIG. 8 and as viewed from the chord end of the connector portion.