We go through a lot of peanut butter in our house. And I mean a lot! So much that I've been feeling as though I should come up with other uses for the jars instead of throwing them right away in the recycle bin. I featured an idea before using them as storage for kids toys, and it's proven to be a great way to keep those little lego pieces in check and to house all those accessories that comes with toys. In my house it's "blasters" AKA: guns that come with star wars characters or swords but I've been to a few houses that have been overrun with Barbie shoes that it would be perfect for also.
Well recently I started using them as food storage for the freezer. Why I never thought of this before now..who knows! But it's great for storing things that could spill after being defrosted like sauces and such. But the best part is that they fit perfectly on the shelf on the freezer door.
Just remember to never microwave the peanut butter jars because they will melt. Trust me. :)