I hate tossing out a sturdy container when I know it still has years of useful life left in it, and plastic peanut butter jars are one of the biggest missed opportunities in most kitchens. They’re lightweight, easy to wash, stack neatly in cabinets, and usually come with a tight-fitting lid that makes them far more practical than a lot of store-bought organizers.
Over the years, I’ve reused these jars everywhere from my pantry to my laundry room to the back seat of the car, and they’ve saved me money more times than I can count. If you’ve got a few empty jars waiting for the recycling bin, here are 10 smart, simple ways I’d put them back to work around the house.
1. Pantry containers for dry goods
One of my favorite uses is storing smaller amounts of dry goods like rice, popcorn kernels, oats, lentils, and baking chocolate chips. A standard peanut butter jar usually holds around 16 to 28 ounces, which is perfect for the half-used bags that otherwise spill all over the pantry shelf.
I wash the jar with hot soapy water, let it dry overnight, and then fill it with one ingredient only. If I’m packing school lunches or making weeknight dinners in a hurry, seeing everything contained and easy to grab makes my kitchen feel a whole lot calmer.
2. Snack jars for road trips and lunch boxes
These jars are just right for pretzels, crackers, cereal, trail mix, or cut-up dry snacks that get crushed in plastic bags. I like filling each jar with about 1 1/2 to 2 cups of snacks so the kids can grab one on the way to practice or I can tuck it into the car for errands that run long.
If you want to keep things fresh, make sure the jar is completely dry before filling it. For picky eaters, I’ll sometimes do one jar of plain crackers, one with cheese crackers, and one with mini marshmallows or cereal so everybody gets something they’ll actually eat.
3. Homemade salad dressing shaker
A peanut butter jar makes a terrific dressing shaker because the lid seals tightly and the wide mouth is easy to fill. I use one for a simple vinaigrette: 1/2 cup olive oil, 1/4 cup vinegar, 1 teaspoon mustard, 1 teaspoon honey, and a pinch each of salt and pepper.
Just add everything, screw the lid on firmly, and shake for 20 seconds. I usually keep one in the fridge for up to 5 days, and it’s so much easier than dirtying a bowl and whisk when I’m trying to get dinner on the table fast.
4. Craft supply organizer
If you have children in the house, you already know how quickly crayons, pom-poms, buttons, googly eyes, and beads can take over the dining table. These jars keep tiny supplies contained, and because they’re clear, you can spot what you need without dumping everything out.
I like using one jar per category and storing only about 2 to 3 cups of supplies in each so they’re not too heavy for little hands. They also fit nicely on a bookshelf or in a low cabinet, which makes cleanup much easier after an afternoon craft session.
5. Garage or junk drawer hardware holder
Loose screws, nails, washers, hooks, and wall anchors are exactly the kind of little items that disappear when you need them most. A peanut butter jar gives you a durable, see-through place to keep them sorted, and the lid keeps everything from spilling if the jar tips over on a shelf.
I usually separate by type rather than mixing sizes together: one jar for screws, one for picture hangers, one for hex nuts, and so on. Even half-full jars make a cluttered workbench look more manageable, and you can stack several in a cabinet without worrying about broken glass.
6. Freezer-safe broth or soup starter container
While I wouldn’t fill one with boiling liquid, a cooled peanut butter jar can be useful for storing broth, bean liquid, or soup starter portions in the freezer. Leave at least 1 inch of headspace at the top so the liquid can expand, and freeze it only after it has cooled completely in the refrigerator.
I often save 1 1/2 cups of chicken broth or leftover vegetable stock this way, which is just enough for a quick skillet dinner or a pot of rice. It’s a great habit if you cook often and hate wasting those small amounts left at the bottom of a carton.
7. Coin jar for small savings goals
This is such a simple one, but it really works. Set one jar on a dresser, in the mudroom, or near the kitchen counter and start dropping in loose change, dollar bills, or even receipts you need to sort later.
I’ve used jars like this for little family goals such as movie night money, school book fair spending, or a summer ice cream fund. A medium jar fills faster than you’d think, and because it has a lid, nobody accidentally knocks coins all over the floor.
8. Laundry room container for clothespins or pods
In the laundry room, these jars are handy for clothespins, stain-remover sponges, small sewing kits, or individually wrapped laundry pods. The shape is compact enough to fit on a shelf above the washer without taking up much room, and the lid helps keep moisture away.
If you’re storing something like clothespins, one jar can hold quite a few without looking messy. I like that it keeps all the little odds and ends in one place instead of rattling around in a basket or getting lost behind detergent bottles.
9. Garden scoop-and-store jar for seeds
Peanut butter jars are useful in the garden shed too, especially for storing seed packets, plant markers, twist ties, or small amounts of potting mix for indoor starts. Because the lid closes tightly, it helps protect contents from damp air better than an open tray would.
I’ve also used one to hold sunflower seeds and another for dried bean seeds we saved from the garden. Tucked onto a shelf near gloves and hand tools, they keep spring planting supplies together so I’m not hunting around when the weather finally turns nice.
10. Car caddy for wipes and small essentials
I always appreciate any trick that makes the car less chaotic, and a peanut butter jar is surprisingly good for holding baby wipes, hair ties, bandages, tissues, or spare plastic utensils. It fits in a seat-back pocket or door compartment much more neatly than a handful of loose items.
For family travel, I’ll pack one with napkins, wrapped straws, and a few snack-size utensils so drive-through meals are less of a mess. It’s not fancy, but it keeps the little things together, and as a busy mom, that kind of practical solution is my favorite kind.
Once you start saving a few of these jars, it’s amazing how quickly you find uses for them all over the house. They may seem ordinary, but a good sturdy container can make everyday family life a little tidier, cheaper, and easier.
