Glass canning jars are a great way to store pantry staples and bulk bin ingredients at home: They don't absorb odor, they are transparent (so you can see what's inside) and if you need to toss them out, they are completely recyclable. But the metal lids that come with canning jars can get rusty, dirty or completely lost. Here's a simple upcycling solution: The plastic jar lids that are used for items like peanut butter, mayonnaise and other condiments fit perfectly on those glass canning jars. Just clean them well, then use them to keep your herbs, dried beans or whatever else you want to store airtight and fresh.