Magnetic Attracters are a piece of Venusian technology.
Description[]
Magnetic Attracters were used by Venusians on space missions as early as 1167 to create whatever their need; from samples of any given kind of atom or element, the machines can pull more of the same atom from rarefied elements floating in the apparent void of Space after one turns on the Energy Coils. From a handful of dirt containing all possible elements, Magnetic Attracters can create miniature planets capable of supporting life, on which new and edible plantlife will spontaneously evolve.
Behind the scenes[]
Magnetic Attracters appear in the 1958 story The Twenty-Four Carat Moon.