The sistema container sets mentioned in April's post are a great way to containerize and manage food storage. While the system mentioned can be found at Sur la Table, Macy's also carries a similar line of storage containers by Martha Stewart that are a great way to organize your kitchen and pantry. Additionally, don't overlook Gladware containers for reusable food storage!
You can use any of these options to containerize - that is, to stick to a few stackable sizes of storage containers. Pick a couple sizes that you'll get the most use out of; ones that can fit a variety of sandwiches or leftovers. Stack lids and containers together, and you'll have a clutter-free way to store and save a wide variety of foods.
When searching storage options online, don't forget that customer reviews can be especially helpful in finding the right type of containers for you!