Sickle-shaped objects are often associated with death and bad luck. However, there is a lot more to these objects than meets the eye.urds shaped like sickles have a long history of being used as tools, and are even still used today in some parts of the world. They can be found in a variety of shapes and sizes, and have been used for a variety of purposes. Some sickles are designed for harvesting crops, while others are designed for various farming tasks.