I built one once, and that was the easiest way to go I think, and it gives you options for creativity and experimentation. I just built a small vertical box with mounting holes for the rad and some acrylic windows + lights for cool affect. I basically built it like a regular case, but just for holding a rad. If I still had it I would offer it up to you, but i gave it to my friend a while back.
In short : I would suggest building one, easiest materials to use, MDF wood, or acrylic in my opinion.