There are some tools that work with the power of essence. These tools are called Essence Tools. If essence is channeled, these tools can perform their functions. Essence Tools are all used for different purposes. Essence Tools without an owner will leak spirit energy, so someone can use spirit energy to know if they are real or not. The art of creating these were lost long ago, so they are considered antiques.
By the interstellar age, essence tools have truly become antiques used by collectors or researchers. Most essence tool functions have been replicated in spirit guidance devices and later in most daily modern technology.
However, interstellar technology cannot yet completely replicate space storage tools that can hold living beings.