Photo suggestions?

A nonprofit scholarly journal's editor has asked me for a suggestion for a photograph to use on the cover of an upcoming issue. The topic is related to economics and nutrition, and she suggests something about a food transaction. Her instructions say, "Generally a simple photo works best. It needs to be of high enough resolution for printing at the size used. (For example, we would need the file supplied at 300 dpi with a width of 8.375 inches, or proportionally higher dpi if provided at a smaller size--we can adjust the size as long as the resolution is there.) A copyright release is also required." If you have a suggested photograph, please send with a suitable price quote for nonprofit use to the email address in my Blogger profile. Thanks!