What objects are more useful upside down?

Certain objects serve better when turned upside down, such as funnels, which allow liquids to flow smoothly into containers. Additionally, some containers, like jars or bottles, can be inverted to ensure all contents are easily accessible. Upside-down planters can promote better drainage and aeration for plants. Lastly, certain kitchen gadgets, like a salad spinner, often work more effectively when inverted.