To be honest, there would be few legal issues because you'd essentially be creating a one of a kind item. One, you're not going to find a game company come after you for what would be a single item. Heck, they'd probably want photos or to use it for their own publicity purposes.
Now, if you made multiple copies to sell, then you'd be opening yourself to trouble. Otherwise you're basically creating a craft object that is only for a single individual's enjoyment.
So, someone could offer this as a service then? I read Hasbro went after someone who turned an abandoned train station into a giant monster version Monopoly set, so who knows.
I can see the issue of where someone sees a version of a game and then wants another one made. Perhaps the designer could work out an agreement where the company gets a cut, something like $50 a game or so, or whatever. It would make good publicity though.