Huh. Seems more like something a creepy fan would make. I absolutely adore the faces on those, though... Hancock's is her "I'm cute don't hurt me!" face, which fits. Nami's far too vulnerable looking for her usual characterization, but that makes it two-for-two on disturbingly victimized expressions, so, y'know, at least it's consistent.
But then Robin seems TOTALLY into being a mousepad with breasts and it throws off the flow.
...
I do like the idea of a wrist rest on a mousepad, though, if you're on a computer for long enough. But... I dunno, modeling them on breasts just seems unnecessary. Is that, like, a kink? MousepaRAB? Are people into that?