April's Aeon Crystal

The Aeon Crystal is a mysterious relic April picked up in Beyond the Known Universe.

Description
The Crystal itself looks like a sphere head, welled out in the middle. On the opposite side of where this connects to the necklace, it has a small hollowed out circle. According to Donnie, the Crystal has properties not found on Earth.

The Crystal itself is shown to amplify April's budding psychic powers, to the point where it can give her telekinesis. When Donnie tried to study it, a strange spectral mass came out of the Crystal, bringing several pieces of equipment to life. Later it shown to bring Monoculus, Wingnut, Screwloose, and their gear from a comic book to life.

This crystal is not without flaws. During Bat in the Belfry, April was complaining about headaches and strange nightmares about outer space. However the most noteworthy drawback about the Aeon Crystal is its addictive properties. April became overly obsessed with this relic, quickly snapping at the Turtles, and straight out calling it hers. Even Wingnut and Screwloose weren't immune to its properties, as Wingnut stated the crystal was the source of power and life itself.