thought that could only be a product from the marvelous strapya and of course it was - available in 2 versions "nami's hand" (pictured above - http://www.strapya.com/products/51628.html) and "yamato's hand" (http://www.strapya.com/products/51629.html).
they have yet to show on strapya's world page (http://www.strapya-world.com/) but it can't be long, really ;)

the strapya pages also show a few additional uses - none the less creepy - for the hands - personally I'd much prefer their strawberry ice cream dessert cover (http://www.strapya.com/products/51404.html)