Someone on my route was throwing away this "Bakugan" base/arena/whatever this is, so i grabbed it to be the base of a sci-fi diorama.
I will either use contour putty to fill in the Bakugan logos, or glue additional pieces over them. I love the circuitry design engraved into it. It is a really decent size as you can see in the 2nd pic with the 4" figure.