Make sure that you never miss drugstore, grocery store or gas station discounts that are only offered to loyalty cardholders by downloading all of your cards to your smartphone. You can do this with the free Key Ring app, which saves the numbers electronically and lets you pull them up as a scannable bar code at the register.
Here's why you don't want to purchase a mattress in April, a grill in June or that home printer at Christmas. (Plus, find out when you can get a great deal.)