ELI5: Explain Like I'm 5

Object of the mind

Objects of the mind are ideas or thoughts that we think of in our heads. For example, if you were thinking about what kind of ice cream you wanted, that would be an object of the mind-- the idea of ice cream. Objects of the mind don’t always have to be ideas, though. They can be memories, images, or even symbols, like the ones you’d put on a map. So objects of the mind could be anything you imagine or think about.