There's a reason Costco is so popular among moms—and we're not talking about the "Chorizo I sampled, but never cooked." It's no secret that stocking up on items can save you money and trips to the grocery store; however, when you meal prep, it's important to be strategic about what, exactly, you're buying in bulk. Canned goods and dry pasta will last a long time, obviously, as will strawberries if you freeze them. Another great thing about berries is they can be employed in a variety of ways, from fruit salads to smoothies. If you happen to find a great sale on onions and peppers, you can totally stock your freezer with pre-chopped veggies for future meals. When you finally cook with them, you'll never notice that they were frozen first.