Need a nice idea

for a logo for Controlling Department :D In 3 weeks there's a company's picnic and a football tournament will be hosted. My department will have its own team. We're going to buy some t-shirts but we think it would be nice to have some kind of logo.

If you have any ideas what such logo could have, feel free to post. You can post images that could be used or an already prepared version :D

Random girl