Upcycling is a great way to reduce waste, and those tough plastic detergent caps (from laundry detergent, fabric softener, or even milk jugs) are surprisingly versatile.
Since they are designed to hold liquids and withstand wear and tear, they make excellent materials for DIY projects around the house and garden.
Here are some of the best ways to reuse detergent caps, turning that “trash” into treasure:
1. In the Garden & Garage
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Mini Greenhouses / Seed Starters: This is one of the most popular uses.
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How: Clean the cap thoroughly. Fill it with potting soil and plant a seed or two. The cap acts as a tiny, self-contained pot. The opaque plastic can also help protect delicate roots from the sun.
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Pro-Tip: Poke a small hole in the bottom for drainage before adding soil.
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Paint Pots: If you’re doing a small touch-up paint job, pour a small amount of paint into a detergent cap. It has a built-in handle (the cap itself) and a spout for pouring, making it the perfect non-slip, disposable paint cup.
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Organizer for Nuts, Bolts, and Screws: When you’re taking something apart, use different sized caps to hold the various screws and small parts. They won’t roll away like they do on a table. Magnets also stick to the steel ones!
2. In the Kitchen
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Funnel in a Pinch: If you can’t find your funnel, a clean, dry detergent cap can work. Just flip it over, and the spout is often the perfect size for directing dry goods like rice, beans, or sprinkles into a jar with a small mouth.
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Bottle Stopper: Lost the stopper for your olive oil bottle or a unique liquor bottle? A small, clean plastic cap from a water jug or detergent might just screw on and seal it perfectly.
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Pre-measured Portions: If the cap is from a product you use often (like liquid soap for a refillable dispenser), keep the cap and use it as a permanent measuring tool.
3. Clever Household Hacks
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The Ultimate Doorstop: This is a genius hack. A large, heavy-duty laundry detergent cap (the type with a built-in handle) can be screwed into the base of a door to act as a discreet, effective doorstop. It won’t mark up your walls or floors like a traditional rubber stop.
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Scrubber for Tight Spaces: The textured ridges on the inside of many caps (like those from fabric softener) are perfect for scrubbing. Pop one onto your fingers to clean the hard-to-reach corners of bottles, vases, or even the grout in your shower.
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Soap Saver / Sponge Holder: Place a cap (ridged side up) in your kitchen or bathroom sink. Put your wet sponge or bar of soap on top. It elevates it, allowing air to circulate underneath so it dries out faster and doesn’t sit in a puddle of water.
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Bath Toy Scooper: Keep a large, clean cap near the bathtub. It’s the perfect size for a toddler to scoop and pour water, and at the end of bath time, use it to scoop up all the little wet toys and drain the water out easily.
How to Prepare Your Caps for Reuse
The most important step is cleaning them thoroughly.
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Rinse immediately with hot water to remove most of the soap residue.
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Soak them in a sink of hot, soapy water for 15-20 minutes.
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Scrub with a bottle brush or old toothbrush, paying special attention to the threads and any ridges.
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Dry completely before using them for any of the projects above.
So, before you toss that empty detergent bottle into the recycling bin, give the cap a second look. With a little creativity, it can have a whole new life