By opening your view to observe not only space (floor) and inanimate objects (wheels, Ohno circles, debris, etc.) but also to the people performing the tasks, you’ll get a much better sense of the barriers to higher productivity. After all, people are the sole source of productivity.
What are you looking for?
Bending and twisting
frequent movements that bring people out of their comfortable reach area (30 inches)
It will become evident that lack of casters on carts, materials stored on the floor, obstacles like equipment and debris, and no Ohno circles are often the root cause of their non-value added motions and exposure to injury risk factors (musculoskeletal disorders).