3D printing offers unprecedented opportunities to build custom tools at low cost. The organization e-NABLE focuses on one use for this growing technology: building prosthetic hands for children.
One of the organization's volunteers, Aaron Brown, wanted to demonstrate this technology at a local children's hospital in Grand Rapids, Michigan in a way that kids would find especially appealing. So he designed this variant hand. Then Brown printed some claws with blue and yellow filament and spray painted the claws silver. The result is a Wolverine hand that would thrill any kid (and most adults) who gets one.
Brown emphasizes that the claws aren't metal--just plastic. For reasons unfathomable to me, he seems to think that this is a good selling point.