DISSOLVE jelly powder in boiling water, stirring until completely dissolved, about 2 min. Pour into paper cups.
REFRIGERATE until firm, at least 2 hours.
CAREFULLY peel away paper cups from jelly. Slice a thin layer from long side to help 'spider' sit flat. Insert 3 licorice pieces on each side of spider for legs; place licorice allsorts on top for eyes.