Egg cartons are smart packaging solutions. While their primary purpose is to protect eggs during transport and storage, they have many creative uses around the home. From gardening to organizing to crafting and soundproofing, you can upcycle and reuse egg cartons in various ways.
In this guide, we’ll explore 10 innovative uses for egg cartons to reduce waste and find new life for these everyday items.
Understanding Egg Carton Materials
The two most common types of egg cartons are paper and styrofoam, each with unique properties that make them suitable for different projects.
Paper Egg Cartons
Paper egg cartons feature recycled paper pulp, making them an environmentally friendly option. They are biodegradable and compostable, ideal for gardening and eco-friendly projects. These cartons are also easy to cut, paint, and mold for crafts and DIY projects.
The standard egg carton—known as a 2×6 in packaging parlance—is made of molded recycled paper. As TOH contributor Mark Feirer notes, this means you can give that paper yet another life by reusing the cartons in resourceful ways around the house and garden.
Styrofoam Egg Cartons
Styrofoam egg cartons, made from expanded polystyrene foam, are lightweight and provide excellent insulation. While not biodegradable, you can reuse them multiple times, and they are particularly suitable for projects requiring water resistance or insulation. Styrofoam cartons are also easy to clean and work well for both storage and organization.
Gardening Applications for Egg Cartons
Egg cartons can be valuable for gardeners, offering eco-friendly solutions for starting seeds and creating planters. Due to their biodegradability, we recommend using paper egg cartons for your garden projects.
Starting Seedlings
Sprouting your seedlings in a paper egg carton is an organized and easy way to start and transplant your plants while reducing the risk of damaging them. Follow the steps below:
- Cut off the lid of the paper egg carton.
- Fill each cup with potting soil.
- Plant seeds according to package instructions.
- Water gently and place in a sunny location.
- Once seedlings sprout and are ready for transplanting, cut each cup from the tray.
- Plant the entire cup in your garden, as the paper will decompose over time.
Soil Tip: Don’t use garden soil for your egg carton seed starts—it’s too heavy for delicate seedlings. As demonstrated on This Old House, use a mix of sphagnum moss and vermiculite, which creates a free-draining, spongy medium that young roots can easily push through. Pre-saturate the soilless mix with water before filling your carton cups, so the seeds have even moisture right from the start.
Creating Biodegradable Planters
In addition to starting seedlings, paper egg cartons can make biodegradable planters for small plants or herbs. Follow the same steps for starting seedlings, but use slightly larger plants or allow seedlings to grow larger before transplanting. These mini planters are perfect for windowsill herb gardens or as organic gift containers for plant lovers.
Organizing and Storage Solutions
Egg cartons can organize small items and safely store delicate objects. Their compartments make them ideal for different storage needs.
Organizing Small Hardware
Use egg cartons to keep screws, nails, bolts, and other small hardware items organized during home improvement projects. The individual cups provide perfect separation, and you can easily label each compartment. This method is handy when disassembling appliances or furniture.
From the Field: TOH reader Brent Kirby of Douglas, Mass., swears by this method: “Keeping small parts organized when repairing an item is as easy as making breakfast. I use empty egg cartons to group and contain the pieces.”
Storing Holiday Decorations
Egg cartons are excellent for storing small, fragile holiday ornaments and other decorations. The compartments provide cushioning and prevent delicate items from knocking against each other. Wrap each item in tissue paper before placing it in the carton for extra protection. This method keeps decorations protected and organized for easy storage and unpacking next season.
Eco-Friendly Crafts With Egg Cartons
Egg carton crafts are eco-friendly and fun for adults and children. They are a great way to reduce waste and create functional items for your home or garden.
TOH Insider: TOH technical editor Mark Powers once found another creative use for egg cartons—he nailed them to his apartment walls and ceiling to dampen sound while recording music during his rock-star wannabe days. It’s a testament to the carton’s versatile molded-paper design, which the packaging industry refers to as a “2×6.”
Fire Starters
Create fire starters for your grill or fireplace:
- Melt candle scraps in a double boiler.
- Fill each egg carton cup halfway with sawdust.
- Carefully ladle the melted wax over the sawdust.
- Allow the wax to cool and harden completely.
- Cut the cups apart to create individual fire starters.
Light the edge of a cup and place it under your kindling. These fire starters are great for camping trips or backyard bonfires. Make sure to follow all fire safety precautions.
Bird Feeders
Transform egg cartons into simple bird feeders to attract feathered friends to your yard:
- Remove the lid from the egg carton.
- Punch small holes in each corner of the tray.
- Thread string through the holes to create a hanger.
- Fill each cup halfway with bird seed.
- Hang the feeder from a tree branch or hook.
This project is an excellent way to reuse common household products while supporting local wildlife.
Seed-Starting Tip: Egg cartons also make excellent biodegradable seed starters. Cut off the lid, fill each cup with potting soil, and plant your seeds. Once the seedlings sprout, cut each cup from the tray and plant it—cup and all—directly into the ground. The molded recycled paper will break down naturally in the soil.
Soundproofing and Acoustic Treatment
Egg cartons can be an affordable solution for basic soundproofing and acoustic treatment in home studios or noisy spaces. While not as effective as professional acoustic panels, they can help reduce echo and improve sound quality in a room.
Here’s how:
- Collect a large number of clean, dry egg cartons.
- Remove the lids and flatten the cartons.
- Arrange the cartons on the wall, alternating their orientation to create an uneven surface.
- Secure the cartons to the wall using a strong adhesive or by nailing them down.
This DIY solution can be handy for musicians or podcasters looking to improve their studio acoustics on a budget.
For Serious Soundproofing: Keep in mind that egg cartons only help reduce echo and reverberation — they won’t block sound transmission between rooms. For true sound isolation, TOH general contractor Tom Silva recommends spraying low-density, sound-deadening foam into joist and stud bays, installing two layers of drywall with staggered seams, and sealing all gaps and outlet openings with acoustical caulking or butyl rubber compound.
Upcycling Egg Cartons for Kids’ Activities
Egg cartons provide an excellent base material for many children’s activities, from art projects to educational games. These projects encourage creativity and help teach kids about recycling and reusing everyday items.
Art Projects
We recommend egg cartons for a variety of art projects, including:
- Colorful caterpillars or snakes
- Flower bouquets
- Miniature doll furniture
- Masks or animal faces
- Paint palettes for mixing colors
Encourage children to use their imagination and decorate the egg cartons with paint, markers, or craft materials to create unique art pieces.
Educational Games
Create educational games using egg cartons to help children learn counting, sorting, and color recognition. Some ideas include:
- Color sorting: Paint each cup a different color and have children sort small objects by color.
- Number matching game: Write numbers in the cups and have children match them with the correct number of small objects.
- Memory game: Create matching pairs in the cups and have children find the matches.
These activities provide hands-on learning experiences while making use of recycled materials.
Practical Household Uses
Beyond crafts and organization, egg cartons have several practical household applications.
Makeshift Ice Cube Trays
In a pinch, styrofoam egg cartons can serve as makeshift ice cube trays—just fill each cup with water and freeze. This method is helpful when preparing for parties or events where you need extra ice.
Remember to clean the carton thoroughly before use and consider lining each cup with plastic wrap for easier removal of the ice cubes.
Packing Material for Shipping
Egg cartons are also ideal packing material for shipping fragile items. Their stiff yet lightweight structure provides good cushioning without adding significant weight to your package. Cut or tear the cartons as needed to fit around your items instead of using styrofoam peanuts or bubble wrap.
DIY Fire Starters: Here’s another practical use from the TOH archives: Melt candle scraps in a double boiler, then fill each egg carton cup halfway with sawdust. Carefully ladle the wax over the sawdust and let it cool. Each cup can serve as a fire starter for your grill or firepit—just light the edge of the carton cup.
Composting and Recycling Egg Cartons
Proper disposal of egg cartons is essential for minimizing environmental impact. Both paper and styrofoam cartons can be recycled or repurposed in various ways.
Worm Farm Food Source
Paper egg cartons can be an excellent food source for worm farms. Tear the cartons into small pieces and add them to your worm bin. They help balance moisture levels in the soil mix—if it’s too moist, add dry carton pieces; if it’s too dry, soak them in water first. This method encourages composting and helps create nutrient-rich soil for your garden.
To build a simple worm farm at home, stack three 5-gallon buckets: the bottom bucket captures excess moisture (which, when diluted 1:10 with water, makes a great liquid fertilizer), while the two upper buckets, drilled with 3/16-inch-diameter holes, allow air in and send moisture out. Add a 3-to-4-inch bed of moistened shredded egg cartons and paper as starter bedding, then introduce your red wigglers.
Pro Tip: TOH landscape contractor Jenn Nawada says worm composting is simpler than you think: “Worms can eat half their body weight in food every day. Their by-products, called castings, are black gold for gardeners.” Torn-up paper egg cartons make an ideal bedding material for a worm bin, since the molded recycled paper balances moisture and provides carbon-rich food the worms need.
Proper Recycling Methods
Remember to properly recycle your egg cartons when you’re done with them. Always clean and dry cartons thoroughly before placing them in your recycling bin to avoid issues like mold growth, pest infestations, and contamination.
- If recycling isn’t available, consider donating clean cartons to schools or community centers for craft projects.
- You can recycle most paper cartons alongside other paper products.
- Clean styrofoam cartons may be recyclable in some areas – check with your local recycling center for guidelines.
Safety Considerations When Reusing Egg Cartons
While egg cartons have many creative uses, be sure to take precautions when repurposing them:
- Always clean and sanitize egg cartons before reuse, especially if they might come into contact with food or plants.
- Avoid using egg cartons for long-term food storage, as they can harbor bacteria.
- Be cautious when using egg cartons for crafts with young children, as small pieces can pose a choking hazard.
- When using egg cartons for fire starters or other flammable projects, exercise caution and follow proper fire safety guidelines.
