The ornamental design for a tassel for coverings for architectural openings, as shown and described.
FIG. 1 is an isometric of the tassel for coverings for architectural openings of the present invention.
FIG. 2 is an isometric looking downwardly at the front thereof.
FIG. 3 is a top plan view thereof.
FIG. 4 is a front elevation thereof.
FIG. 5 is a right side elevation thereof.
FIG. 6 is a rear elevation thereof.
FIG. 7 is a left side elevation thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines in the drawing, showing the covering for the architectural opening and the environment of the new design, are for illustrative purposes only and form no part of the claimed design.