Do you often end up with more in your shopping cart? There are supermarket tricks behind this. Shopping carts often have a very special design.
Many trolleys have extra compartments so that small parts don't fall out. There are also usually two plastic pieces attached to the end of the car that cover the corners. They help to ensure that the return is as quiet as possible. Even the structure on the shelf follows rules. Another common trick used by supermarkets is to place more expensive goods directly at eye level and in the customer's field of vision.