[youtube]http://www.youtube.com/watch?v=jvfOOYht5H0[/youtube]The Walker shop sells a product calledQ-Ba-Maze,a Lego-like system of clear/colored plastic cubes that kids (or you) can fit together to sculpt … well, virtually anything. Drop a marble into any hole, stand back and watch the magic. I bring you this little commission-free plug because the Walker tapped architect-turned-Q-Ba-Maze founder Andrew Comfort to fill the shop display window facing Hennepin Avenue with something colorful, grand and plastic. With the help of University of Minnesota art and architecture students, Comfort spent most of Monday (and likely much of today) installing a giant replica of a red snapper. Eavesdrop dropped in on his process.