Sure!
I want somebody to design a book cover for me.
The topic is physics. But not physics in General (for example, I'm not looking for an image with the face of Einstein).
I am looking for an image to combine some of the stuff that is taught in Greece's High School.
If you are not familiar with it, my friend mentioned the following: Everything related to Kinematics, Forces being applied to/from objects, Newton's Laws, Acceleration/Momentum (Angular or Linear)/Torque, Collisions, Oscillations, Sound Waves, etc. (There are chapters with electricity and magnetism as well, but he doesn't prefer them as a cover photo).
An example of such image would be an item in motion, colliding with another item in motion, while in the background the forces that are being applied to/from every object are analyzed. Another example would be something like a soundwave, while in the background you can see the description of the specific wave, or its equation. I have not studied physics at all, so I am not the best person to provide you with more info about it, but I really hope that you can create something unique =]
For more information, feel free to PM me or post here/at skype.