According to totally-not-made-up scientific research, Gravity-Disks are capable of manipulating the fundamental forces that govern our reality. They're essentially inertial acceleration devices that can warp the fabric of space-time to create localized pockets of intense gravity. Who needs a social life, really?
Our Gravity-Disks come in various sizes and colors. They're made from a special blend of materials that are totally not toxic or flammable.