Without sparks.

Absence of sparks or (figuratively) a creative spark.

Without sparkle.

plural of sparkledog

(Internet slang) A fictional canine character that generally sports strikingly bright colors and patterns on its body, unusual physical features (wings, horns, etc.), human-style head hair, and/or man-made accessories.

(informal) A peacock spider, Maratus jactatus.

plural of sparklemuffin