No, That's a fan grill made out of aluminum you can buy from the store. I was showing you a cool but simple design that you could cut into your cover.
The reason I recommended using the plastic from a dvd case is because you said you didn't want to spend any money and it's soft plastic=(easy to work with)
If you want to spend a little cash, You could use Plexiglass to make a cover (like shumway said) and use a dremel to cut the design out. Or you could cut a hole in the cover the size of the fan, then buy a fan grill like the one in the picture and put it all together.