Don't be afraid of keeping a wide variety of foods and ingredients in your refrigerator and freezer. This will help prolong shelf lives and decrease the chance of pests in your kitchen.
I'm not just talking about the usual milk, eggs, meat and vegetables. In my refrigerator I store flours, certain oils, opened bags of pasta and dried chilies.
In my freezer I have nuts, dried fruit, chocolate chips, grains (including quinoa, rice and oats) and baking powder. There's no need to defrost any of these before using.