Fidget toys to disperse your nervous energy

I dote on fidget gadgets -- soothing gizmos intended to give your hands something to keep busy with, like modern worry-beads -- and while you can't buy Chris Bathgate's amazing machined sliders, and the Fidget Cube Kickstarter just closed, there's still Thinkgeek's new Jumbo Noah Fidget Toy, which looks like a lot of fun and "features two interlocking rings that are also connected together with five links on each ring. The center link is larger and has a colored rubber band that rolls back and forth like a treadmill."