
Plastic egg cartons are made from oil, a non-renewable resource, and are not biodegradable. However, they can be recycled and upcycled. Recycling plastic is important because, since 1950, the world has created 6.3 trillion kilograms of plastic waste, and 91% of it has never been recycled. Here are some ways to reuse plastic egg cartons: as seed trays for gardening, as a paint palette, as a sewing kit, or even as an oven-baked meatball tray.
| Characteristics | Values |
|---|---|
| Environmental Impact | Plastic egg cartons are made from a non-renewable resource (oil) and are not biodegradable. Some end up in the ocean. However, they are widely accepted at recycling facilities and can be used over and over again. |
| Creative Reuse Ideas | Start by sorting your jump rings, nails, screws and other small hardware into the cups of an egg carton. Use the flat side for larger items like scissors. Create a sewing kit by gluing a small piece of elastic to the top of the carton, adding a pin cushion, and filling the cups with pins, reels of thread, buttons, and a tape measure. Use egg cartons to organise washi tape by colour. They can also be used as seed trays for gardening. |
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What You'll Learn

Use them for seed starting
Plastic egg cartons can be used for seed starting, but they have limitations. The inside of an egg carton is too small to grow something well, and there's no drainage, so the seedlings may rot. Egg cartons are best for germinating seeds, which can then be moved to bigger containers before being transplanted outdoors.
To use plastic egg cartons for seed starting, first poke a few small drainage holes in the bottom of each cup to prevent water from collecting and rotting the seed or roots. You can cut the lids off the cartons and place them underneath the seed cups to catch any excess water. Next, fill the cups about halfway with a seed-starting mix—a light soilless blend that won't weigh down sprouts. Drop two or three seeds in each individual egg cup, as not all of them will germinate. Then, cover them with the seed-starting mix. Check the seed packet to ensure you don't plant them too deep; the packet will specify how thick the soil layer on top should be.
To germinate seeds, keep them warm and moist. You can put the egg carton in a plastic vegetable bag to create a more humid environment for the seeds. A warming mat can also be used to hasten germination, but it's not necessary as long as the room is warm. The soil should be kept consistently moist, but never drenched. Using a little mister is a good way to water without damaging the newly emerging shoots. Once the seeds sprout, remove the plastic bag and set your container in a sunny, warm spot until the seedlings are ready to be planted outside.
When the roots reach the bottom of the tray, the seedlings should be moved to the garden. If you used a cardboard egg carton, you can cut the cups apart and plant them directly in the soil, as the cardboard will disintegrate. If you used a styrofoam or plastic carton, you'll need to remove the plant and its soil from the cup before planting.
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Make a sewing kit
Plastic egg cartons can be reused to create a convenient and portable sewing kit. This is a great way to upcycle plastic and avoid sending it to landfills. Here is a step-by-step guide to making your own sewing kit using a plastic egg carton:
Prepare the Egg Carton:
Start by opening the egg carton and separating the lid from the bottom portion. You will be using both parts for your sewing kit. The bottom section, with its individual cups, will be perfect for organizing small sewing items, while the flat lid will provide a useful space for larger tools.
Paint and Decorate:
To make your sewing kit more personalized and aesthetically pleasing, you can paint the egg carton in a colour or design of your choice. Feel free to get creative and decorate it to match your craft room or personal style. You can even cut the carton down to a size that suits your needs, as plastic cartons are easy to customize.
Create a Pin Cushion:
Using a scrap of fabric that complements your colour scheme, create a small pin cushion. Add some stuffing to the fabric, and then wrap and secure it, forming a miniature cushion. You can attach a small piece of elastic to the top of the egg carton, providing a convenient spot to slip in scissors or seam rippers. Finally, glue the pin cushion to the top of the egg carton, creating a functional and attractive feature.
Fill with Sewing Supplies:
Now it's time to fill your egg carton sewing kit with all your essential sewing supplies. The individual cups can hold pins, reels of thread, buttons, and other small items. You can also use the flat lid to store larger tools like scissors, tape measures, or craft knives. Don't forget to add a small pair of scissors to take advantage of the elastic holder you created.
Label Your Sewing Kit:
Finish your project by labelling your new sewing kit. You can use fun letters or tags to identify the contents. This sewing kit is now ready to be used and enjoyed, and it will come in handy for all your future sewing projects and quick repairs.
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Store small hardware
Plastic egg cartons are a great way to store small hardware items such as nuts, bolts, screws, nails, and jump rings. The cups of the carton can be used to sort and store these items, while the flat side of the carton can be used to store larger items such as scissors or a craft knife. Egg cartons are also a good size to fit in drawers, making them easily accessible for projects.
To create a portable and secure sewing kit, start by painting the top of the carton a colour of your choice. Once dry, create a pin cushion using a scrap of fabric that matches your colour scheme. Add stuffing and then wrap the pin cushion like a gift, using a small piece of elastic to make it easier to slip in scissors and seam rippers. Add a little hot glue to secure the pin cushion to the top of the egg carton.
Egg cartons can also be used to store small ornaments, craft supplies, jewellery, and office supplies.
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Create paint palettes
Plastic egg cartons can be reused as paint palettes for your next painting project. Before using the egg carton, ensure that it is clean. The cups of the carton can be used to section off different colours, and the lid can be used as a mixing tray. The pointed middle parts of the carton can be used to hold paintbrushes. Once you are done painting, let the egg carton dry and save it for your next painting session.
To add a creative twist, you can also decorate the exterior of the egg carton with paint, patterned napkins, or decoupage. You can even turn your paint palettes into decorative bowls. All you need is paper mache and some patience while you wait for it to dry.
If you are painting with children, egg cartons are a great way to reduce mess and contamination while providing a space for mixing colours. They can also be used to hold craft supplies, such as paintbrushes, crayons, and other art materials.
Egg cartons can also be used as gift packaging. Decorate the carton with paint or other craft materials and fill each cup with bite-sized treats and small gifts. Finish it off with a note, flowers, or a gift tag for a personalised touch.
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Make worm farms
Plastic egg cartons can be reused for various projects, including arts and crafts, gardening, and storage. Here is a detailed guide on how to reuse plastic egg cartons to make worm farms:
Preparing the Egg Cartons
First, clean the plastic egg cartons thoroughly to remove any residue or odours. You can cut or tear the cartons into smaller pieces, depending on your preferred size. If you have cardboard egg cartons, you can use them as well. The cardboard variety is particularly beneficial as it contains microbes that worms love to feed on.
Creating the Worm Habitat
To create a thriving worm habitat, you will need two dark, plastic bins that are at least 14 inches (36 centimetres) deep. Drill holes in the bins to ensure adequate airflow for the worms. Line the bottom of one bin with a cut-up T-shirt or burlap, then nest the two bins together.
Assembling the Layers
Start by cutting up some newspapers and spraying them with water. Place the wet newspaper strips in the bottom of the bin. Next, take the torn-up pieces of your plastic or cardboard egg cartons and wet them. Place these pieces in the middle layer of the bin, on top of the newspaper base.
Adding the Worms
Now, it's time to introduce the worms! Add the worms along with the soil they typically come in. You can purchase worms and worm food online or at garden supply and home improvement stores. Your worm farm will soon be thriving!
Maintaining the Worm Farm
To maintain a healthy environment for your worms, monitor the moisture content of the bedding. It should be dry enough to not feel moist but not so dry that it becomes crispy. You can adjust the moisture by adding dry carton pieces or spraying with water as needed.
By following these steps, you can transform plastic egg cartons into a functional and eco-friendly worm farm, contributing to sustainable practices while also supporting the growth of your garden.
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