Sometimes looking closely is enough to make ordinary things unfamiliar again.

Distance is what makes things ordinary. Move close enough to almost anything, a hand, a word repeated aloud, the grain of a table, and the familiarity breaks down and the thing becomes odd again. Nothing about the object changed. The category you had filed it under simply stopped covering what you were seeing.

Try it deliberately with something you look at daily. Get closer than you normally would, or look for longer than is comfortable. The unfamiliarity that appears is not an illusion; it is what was there before habit smoothed it over.