The answer is The personal items should be off the table and the lab materials should be placed neatly away from the edge of the table.
As a general rule, personal items and lab items should not mix, especially food items like a lunch bag. Certain lab materials can be dangerous if touched or handled without the proper protective gear. By placing personal items so close, you are increasing the risk of accidents, which is also why lab materials should be away from the edge of the table.