The UI is good for investigating, looking into everyday identifications, conflicts, and beliefs about yourself and the world, as listed in this previous post. There are also “objects” to look for that you might not have considered, such as time and the body.
Can you find the past? Maybe a memory comes up, or a sensation in the body. Look and see; is that it? What about the future? It most often shows up as a sense of expectation, dread, waiting, or even a vague feeling of “not yet,” also seemingly located somewhere in the body. There can also be a slight, but otherwise unconscious, turn of the eyes as if the future is over there. Is that it?
When you focus on the body, is there anything in any physical sensation that signifies ownership? If you look at your hands, or feel tension in your chest, is there something there that clearly says “mine?” Are those hands owned, or are they merely observed?
Questions about the nature of time can be hashed over and over by the mind endlessly, to no satisfying conclusion. Even if you come up with a provisional answer, nothing is really known for sure. And is there an unquestioned belief or the assumption that “I am this body?” The Unfindable Inquiry is an experience, not a concept. Go beyond words, beyond the mind, and see for yourself, if you’re curious. It’s pretty trippy. Try it and see.