Typical Platonists admit all kinds of "useful" entities in the Platonic heaven such as sets, classes, properties and propositions. These are "useful" in that they relate to our lives as knowers and that theories positing them exhibit certain theoretical virtues. I wonder: Are there any useless entities in the Platonic heaven—entities that are not in any interesting way related to our minds and to the spatiotemporal cosmos? Obviously, barring something like divine revelation, we wouldn't have any reason to believe in any particular useless kind of Platonic entity. Still, one might think it would be really unlikely that the Platonic realm contain only entities of kinds that are useful. So, probably, there are useless Platonic entities, if Platonism is true.