Panera Bread customers who donate a 12-ounce or more box of cereal will receive a free breakfast sandwich from 6 a.m. to 9 p.m. Sept. 18-20 at Chicago area bakery-cafe locations. The goal of the “Cereal Drive to Help Fight Hunger” is to collect 5,000 boxes to benefit the Greater Chicago Food Depository, Northern Illinois Food Bank and Northwest Indiana Food Bank. For details, see panerabread.com.