[ Well, he wouldn't freak out over it, but he may equate Mickey as some kind of animal demon like a kitsune or tengu.... That's a little better than the freaking out reaction, isn't it? ]

The first thing I'd do for a maze is draw it out to get a sense of the scale, but I think using sticks and seaweed could do the trick once you do.

[ He imagines lining the maze with walls of sticks with seaweed draped or woven between them. ]