Here's one you've never seen before. You might be able to make a moving hand. It would probably have a ton of moving parts- motors, gears, pulleys, cables. Maybe some hydraulics. It would cost a small fortune, be fairly heavy, take forever to build, and unless you put a lot of time and energy into soundproofing it would be fairly noisy.

Here's ours. There's an electronics board to drive the fingers, and some wires. That's it. It weighs slightly more than nothing. It's almost completely quiet- just some crinkling from the plastic as it bends. Unless you know the secret, it seems impossible that it would work. There's nothing to make the fingers move! Just a tiny wire. Of course, you know it's a Muscle Wire®, so you understand why it moves. It's still pretty cool.

If you're buying it for yourself

This is a kit. It's pretty straightforward, doesn't take long to complete, and gives you a lot of flexibility in how the fingers move.

If you're buying it for a smart child or grandchild

This is a kit. It's pretty straightforward, doesn't take long to complete, and gives them a lot of flexibility in how the fingers move. This kit is part of what we call our "deceptively educational" products. Smart kids of ten years and up are fascinated by these. The smart ones are always curious, and they realize that these violates the rules of how stuff works. They want to understand why. They put it together so they can have the hands, but along the way they can't help but learn something about working with tools, and soldering, and electronics, and this interesting Muscle Wire®, and leverage and forces. Isn't that a useful way to spend a few hours? If you're a grownup, putting this kit together is also a great way to spend some quality time with someone a lot younger than you.