In the video, a person is holding a small plastic container filled with dried moss. They are carefully pouring the moss into a glass terrarium that is filled with soil. The terrarium is placed on a wooden surface, and the person is using their fingers to spread the moss evenly across the soil. The terrarium appears to be a small enclosure for a pet, possibly a reptile or amphibian. The moss is a vibrant green color and is being added to the terrarium to provide a natural habitat for the pet. The person is being very careful and precise in their movements to ensure that the moss is distributed evenly throughout the terrarium.