In the movie, space pirates describe this device as a "very useful thing" because it allows them to , which they believe will help them achieve power over the universe. Key "Useful Pieces" from the Film

The phrase "useful piece" (or "полезная штука" in Russian) from the film Guest from the Future ( Gostya iz budushchego ) most likely refers to the .

: A rare scientific device used by Alisa Seleznyova to read the thoughts of animals. It looks like a transparent crystal in a black leather case.

: Small, elegant one-person flying vehicles used for transportation in the year 2084. AI responses may include mistakes. Learn more

: Located in the basement of an old house, it allows the character Kolya Gerasimov to travel 100 years into the future.