There's a reason Newton's Cradles have been sitting on office desks since the 1960s. Pull one ball back, release it, and the energy transfers through the row, sending the ball on the other end swinging. It's simple physics, but it's hypnotically satisfying and you'll catch yourself (and everyone who walks past your desk) playing with it all day. This version from PowerTRC features five polished chrome steel balls mounted on a sturdy black wooden base that looks clean and professional on any desk or shelf. It works as a desk toy, a conversation starter, a stress reliever during long phone calls, and a genuinely cool bit of desktop decor. The perfect Kris Kringle pick when you've drawn someone you don't know well, because it works for literally anyone in any job. Also makes a solid gift for science-loving kids and teenagers.

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