In the video, a person is seen holding two brown Lego bricks in their hands. The person then places the two bricks together, creating a single brick with two rows of studs on top. The person then picks up a third brick and places it on top of the two bricks, creating a three-brick structure. The person then picks up a fourth brick and places it on top of the three-brick structure, completing the construction of the Lego structure.