25 Things to Do With Old Candle Jars

Many people who enjoy burning candles wonder what to do with the jars once the wicks have completely burned. Recycling is an option for most old jars made of clear soda-lime glass (the most commonly used type of glass), but many candles are made of other types of glass to increase heat resistance or dyed glass to give the candle an attractive appearance.

Before you throw used candle jars away—or recycle them—consider repurposing them for use around the house.

Below are 25 ways to use old candle jars, keeping them out of landfills and reducing the use of plastic for storage and gift-giving.

1. Prep and Store Food

Prepping food—like salads and overnight oats— for consumption later in the week is one popular use for glass candle jars. If there's liquid in the jar, like a salad dressing, keep it on the bottom layer so the rest of the ingredients won't be soggy by the time you eat.

2. Reduce Plastic Use When You Shop

Most shoppers grab the nearest plastic bag to hold dry beans, grains, and other bulk items they purchase at the supermarket. Bringing a jar to the grocery store is an alternative way to carry these foods home (if you don't have to weigh them in the jar)—you can even use the jars for storage in your pantry or refrigerator.

3. Make a Window Garden

Candle jars without lids make great containers for small window gardens. You can regrow food scraps like green onion, celery, leafy vegetables, and bean sprouts in your jars by placing the scraps in water and letting them get a little sunlight.

4. Ferment Foods

Use candle jars without lids, such as those pictured above, for food fermentation—provided the glass is food-safe. Kimchis, sauerkraut, and fire cider are all great fermentation options. You could cover a larger non-lidded jar with cheesecloth to store a kombucha scoby.

5. Freeze Stocks, Soups, and Smoothies

Allowing extra space at the top of the jar for food to expand as it freezes is probably the most important thing to remember when storing glass jars in the freezer. Wide-mouth jars are best, and the possibilities are almost endless for what you can store inside.

6. Make Homemade Balm or Lip Gloss

Candle tins are great for homemade balms, typically some mixture of beeswax or shea butter along with essential oils. Other homemade beauty products like bath salts or dried herbs for soaking in the bath also keep well in upcycled candle containers.

7. Create a New Candle

Providing the scents don't clash too terribly, one way to reuse all the remaining wax in your candles, as well as the jars themselves, is to combine the leftover wax into new candles. One easy way to do this is to collect the wax on the baking tray after you've baked candle jars to clean them.

8. Keep Catnip Treats on Hand

Cats go absolutely crazy over toys coated in catnip. Simply take one or two small cloth cat toys (little mice work well) and place them in a sealed jar with catnip. Shake well and serve to your cat.

9. Decorate the Table

Decorative glass jars can add beauty to dining room tables, bookshelves, or side tables around the house. Try adding found items from nature like pine cones, pine needles, or dried flowers, that can also add pleasant, subtle scents.

10. Turn Jars Into Painted Votives

Artistic types can paint cleaned candle jars and repurpose them into decorated votives. Take care to use paint that can handle high heat.

11. Make a Cake Jar

Certain types of desserts that don't normally shine when portioned individually can find new life in the fine dining spotlight when layered in individual serving jars. This works well with recipes for trifle or banana pudding, for example.

12. Organize the Bathroom

Another great use for old jars is storage for items typically found in the bathroom like Q-tips, cotton balls, and hair ties. Keeping jars of like items together will also help with organization.

13. Store Tinctures and Herbs

Tinctures can provide a variety of health benefits. One study in the Journal of Clinical and Experimental Dentistry, for example, found that the use of a chamomile tincture helped control the pain and burning sensation associated with ulcers. Before gifting or using any tincture for medical reasons, consult with a physician.

14. Preserve Lemons

All it takes to preserve lemons is a glass jar, lemons, and salt. Brine will cover the lemons as they break down for a month or so, and they'll stay fresh as long as you keep the liquid level above the lemons. Add to salad dressing or seafood for a briny, citrusy zing. This is also a great way to use excess citrus when it's in season.

15. Extend the Shelf Life of Loose Teas and Spices

Teas, dried herbs, and spices purchased in bulk or plastic packaging will last longer if transferred and stored in glass jars with a tight-sealing lid. Whole-leaf teas also add to the decor of any kitchen when stored in clear glass.

16. Collect a Set of Eclectic Drinkware

Increasingly, sustainability-minded folks are ditching plastic and turning to upcycled glass jars, especially for taking drinks on the go. An old candle jar that has a lid works great for carrying cold brew or iced tea to work and can be kept in the fridge in the same container.

17. Make Your Own Bitters

Bitters have been used in cocktails (and mocktails) for centuries, adding flavor and a unique spicy punch to beverages. Because they're typically used sparingly, it's a good idea to have a dropper to add them to drinks.

18. Grow Plants From Seed

Small jars work well for hosting starter plants before the roots grow too large and they need to be transplanted. Don't let your plants grow in jars for too long unless they like wet feet — the roots could rot due to lack of drainage once the plant reaches a certain size.

19. Organize Your Desk

Myriad office supplies can be stored in jars, everything from pens and pencils to staples, paperclips, and small post-it notes.

20. Sustainably Give Homemade Gifts

In contrast to purchasing new containers for homemade gifts like cookies, granola, and spiced nuts, reusing old jars is a more sustainable way to gift. Personalized labels and ribbon or string tied around the top of the jar add unique decorative touches.

21. Keep Leftover Grease

No country cook worth their salt is without a jar of leftover fat from cooking things like bacon. While this isn't the healthiest fat to cook with, the occasional warm bacon vinaigrette is worth keeping some excess fat around.

22. Declutter Your Junk Drawer

Old glass candle jars are great for separating and storing things like batteries, nails, screws, and coins. Clear jars have the added advantage of making it easy to see what you're storing.

23. Make Jams and Curds

Leftover jars are great for storing homemade jams, jellies, preserves, and curds. These goods should be stored in the fridge, as jars being used a second time cannot be hermetically sealed (unless it's a Mason-style jar and you purchase a new ring and flat lid).

24. Build a Terrarium

Closed terrariums usually consist of rocks or pebbles, moss, soil, and various decorations, and can be constructed inside old candle jars with lids. Take care to sustainably harvest your moss and remove any bugs that may appear.

25. Steam Eggs

Don't have a ttukbaegi (Korean earthenware pot) at home? You can steam eggs using sealed glass jars instead, submerging them in simmering water on the stovetop.