The gorilla was smart. From Deathstroke demanding a large amount of gold, wanting to draw people's attention, and mentioning gathering their mental power, he immediately thought of the Cosmic Tuning Fork.
The tuning fork people usually referred to was a small Y-shaped tool, often made of steel or aluminum alloy. Depending on the length of its prongs, it produced mechanical waves of different wavelengths when struck.
The longer the prongs—that was, the taller the tuning fork—the longer the wavelength and the lower the pitch. The shorter the prongs—that was, the shorter the tuning fork—the shorter the wavelength and the higher the pitch.
Tuners also used the thing to adjust a piano's pitch, while in professional sporting events, it could calibrate radar guns used for speed measurement.
Speaking of which, this Cosmic Oddity created by the Anti-Monitor had no prongs and looked more like a tree or a tower. However, its operating principle was to trigger spatial resonance by injecting energy, thereby altering the arrangement of Single Universes within the multiverse and achieving the effect of "tuning" or "shattering" them.
So there was nothing wrong with calling a tower-shaped device cast from gold a Tuning Fork.
Later, Barbatos and The Batman Who Laughs developed some new uses for the Tuning Fork. They used it as a "Christmas Tree," hanging captured humans from it and absorbing their negative emotions to charge it. Then they used it to break the balancing "disk" between the multiverse and the Dark Multiverse, allowing the dark side to invade.
After they were defeated, the thing was confiscated and placed back in Superman's Fortress of Solitude in the Arctic under strict guard. Basically, no one had much use for it.
Most of the time, only Steel, John Henry Irons, was responsible for researching and maintaining it. As Natasha