In the video, a person is seen painting a mug with a toothbrush. The mug is placed on a blue table, and the person is using blue paint to decorate it. The person's hand is visible, and they are holding the toothbrush with a blue handle. The mug is already partially painted, and the person is adding more blue paint to it. The person's movements are steady and precise as they apply the paint to the mug. The blue paint contrasts with the white of the mug, and the person seems to be taking care to ensure that the paint is applied evenly.