Ketchum ended its “Week of a Thousand Ideas,” Friday, which sought to generate a thousand original ideas from the entire agency. With a lighthearted approach to thought leadership, the agency e-mailed (and posted in bathroom stalls) two quick “challenges” each day gleaned from clients like Dr Pepper, Dyson, and Geek Squad, according to Zlata Faerman, an AE at the agency. Other challenges were also posted in the office, such as a the kitchen (and ways to improve it) or how to better integrate the third and fourth floors. Nationally, the company hosted an instant message brainstorm session, minus the New York office. These efforts were led by creative director Hal Walker and VP/creative planner Adrianna Giuliani.