We’re always on the hunt for work-appropriate toys that help pass the time between meetings. And no offense to the Fidget Cubes, Buckyballs, and other tchotchkes we’ve fiddled with to death, but this Engine Desk Toy easily surpasses them in terms of grabbing our attention. The little Stirling Engine that could sits on your desk and kicks into gear when you light the wick and give the wheel a spin. Over time, the RPMs crank up until it looks as if it’s going in slow motion. While this specific Stirling Engine desk toy sold, there are others out there you can find to help pass the time. Or, just put this video on repeat and wait until the boss calls you over to the conference room.