Soot sprite patches. Get them as single or as a set of both for reduced price.
Susuwatari, meaning "wandering soot" in Japanese, or simply soot sprites or dust bunnies in English, are little spirits that, they live in an old uninhabited houses.
White color is Glow In The Dark
Approx 25x25 mm (1x1 inch) PVC rubber patch with velcro back.