In the video, a person is seen adding colorful sprinkles to a bowl of cookie dough. The person uses a red measuring cup to pour the sprinkles into the dough and then uses a wooden spoon to mix the sprinkles into the dough. The sprinkles are small, round, and come in various colors such as red, yellow, green, and blue. The cookie dough is a light beige color and appears to be thick and sticky. The person mixes the sprinkles into the dough thoroughly, ensuring that the sprinkles are evenly distributed throughout the dough.