The Xtensor Hand Exercisor from ThinkGeek “will make your reaction-times much quicker, and will mean no cramping hands after all-night fragging sessions.” Available now, priced at $19.99.

The Xtensor is the only product on the market to perform with true biomechanical correctness, able to stimulate muscles and tendons in the hands, wrists and elbows that have been virtually off limits to all other devices.

[via OhGizmoThinkGeek]