Making ice cubes. Ice does not stick to Styrofoam so egg cartons made of the material are great for making some extra ice cubes when you need to fill a cooler or two. If you plan to consume the ice you make in an egg carton or use it in beverages, you must make absolutely sure the egg carton has been washed thoroughly beforehand to protect your health. If an egg has broken and spilled in the carton, it is probably best to toss the carton rather than use it for making ice.
Egg cartons have constructive uses far beyond just keeping your eggs protected. Because the materials they are made of happen to be lightweight but also sturdy, egg cartons are handy for many purposes. Here are just a few of the innovative ways to repurpose your empty egg cartons.
Starting seeds for your garden. Fill each egg cup with some soil, add a seed or two, water as needed, and sit back to watch your seedlings sprout. When the seedlings are ready to transport to your garden, remove the soil and seedlings and plant. If the egg carton you use is made of cardboard or another biodegradable material, you can actually plant your seedlings in the cups.
Feeding birds. Just remove the top of the egg carton and you have a convenient way to serve up some seed for your backyard feathered friends. Fill the egg cups in the bottom of the cartoon with seed and then hang the entire thing from a tree. You can try setting the carton down on the railing of your deck, stairs, or patio, but there is always the chance you will also attract the attention of ants and assorted insects.
Protecting fragile objects. If an egg carton can keep a delicate egg from cracking, it can also protect delicate keepsakes you decide to pack away, such as breakable knickknacks, ornaments, or heirlooms. Egg cartons can also be used for shipping. Just cut or tear into pieces and use the pieces exactly as you would use packaging “peanuts.”
Storing and organizing small items. Some items we use every day are quite small and can be hard to organize and/or sort. An egg carton makes a perfect storage container and organizer for various small items. The egg cups are the ideal size to hold things that can be difficult to handle and easy to misplace, including office supplies like paper clips and tacks; building materials like nuts and bolts; and sewing staples like pins and needles. They also work well for separating and sorting loose change.