spoiler
Interesting, on the first sentence I actually thought of many different sizes and shapes for the ball, then realized I'd have to pick one before moving on to the next part, so it was kind of a conscious decision. I ended up with a simple grey anti-stress ball. But the table was always the same, light brown wood. All focus is on the ball so the person is just a silhouette partly out of camera but the hand is white and wearing a black sleeve. I only chose what the person looked like after the questions based on what felt right for the initial visualization, like panning out the camera.
There's another question though. Would your mind get into all this trouble if you didn't know there would be questions coming?
Depends what it's based on. It should have a similar runtime. So short story -> movie, book -> mini series. If it's like a series of 5 books I guess it can be a full TV show.