Looking for an easy way to save over $650 this year?Michael L. Fitzgerald, the state treasurer of Iowa, is challenging you to take part in the 365 Penny-a-Day Challenge and put aside $667.95 by Dec. 31. Savers can use actual penny jars or online bank accounts, making this saving technique perfect for all ages.Here?s how it works:Each day of the year corresponds with the number of pennies to be saved. This ...