Creativity is for any department that wants better solutions to whatever they are working on.
And obtaining better solutions to your problems is as practical as it gets. The problem is that so many people are worried about being impractical, of coming up with silly ideas, being ridiculed by co-workers or having an idea that won't work that they won't look at any idea that seems the least bit different. I have to tell you this - if you want better solutions to your problems, then you need to loosen up. Rememer the Swiss watchmakers who thought that their own invention, the digital watch, was just too impractical. Then the Japanese took the technology and captured a large segment of the watch market.