An assembly has a base, a support, a cord, a main body, and a random movement article. The support has a first end and a second end, and the first end is attached to the base. The cord is attached to the second end of the support, and the main body is suspended from the support by the cord. The main body includes a fan configured to produce airflow in an airflow direction. The random movement article is secured to the main body and, when the fan is producing airflow, creates random movement of the main body.