Relax & Recycle with K-Cup DIY Bath Bombs


When even the engineer that created k-cups comes out and says he regrets making the non-recyclable plastic cups, it makes you want to look for some Earth Day friendly way to give those little pods a second life. Destined for the landfill, why not reuse your K-Cups at least once with this simple, fun kitchen craft: Homemade K-Cup Bath Bombs!

Add some more relaxation to your day with sweet scents and bath goodies from Bath & Body Works, Perfumania, and Sephora!

Here’s how to make them. You won’t believe how easy it is:

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Collect your K-Cups. Any of the K-Cups will do except the 99% recyclable cups made with a net bottom and a plastic top. You’ll need the all-plastic cups for this kitchen craft.

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Clean out each K-Cup by peeling back the foil lid and dumping out the coffee ground.

Earth-Friendly Tip: Add those coffee grounds to the compost pile. No need to toss them in the landfill!

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Inside each cup will be a glued on netting. Pull this netting from the cup, removing it completely. Discard and wash the cups clean with water.

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Now fill the bottom of each cup with a few sprinkles or dried flowers. Little lavender petals work beautifully!

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Mix together the bath bomb mixture (recipe below), then press it firmly into each prepared K-Cup. Pack the mixture in tightly. Allow it to set and dry overnight.

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Once the mixture is dried and hardened, slide knife into the hole in each cup. Slice until a long slit is formed, and peel the K-Cup from the bath bomb.

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That’s it! Your bath bombs are ready! Place them in a hot bath, watch them fizz, and enjoy!

K-Cup Bath Bombs

Makes 8
Special equipment:
8 clean, empty plastic K-Cups


  • 2 Tablespoons sprinkles or dried flowers (optional)
  • 8 ounces baking soda
  • 4 ounces citric acid
  • 4 ounces cornstarch
  • 4 ounces Epsom salts
  • ¾ teaspoon water
  • 2 teaspoons essential oil (lavender, orange, or peppermint preferred)
  • 2 ½ teaspoons almond oil
  • 6 drops food coloring (optional)


  1. Sprinkle 1/2 teaspoon or so of sprinkles or dried flowers in the bottom of each K-Cup if a decorative bath bomb is desired.
  2. In a large bowl, combine baking soda, citric acid, cornstarch, and Epsom salts.
  3. In a small bowl, whisk together water, essential oil, almond oil, and food coloring.
  4. Whisk wet ingredients into the dry ingredients. Stir until the mixture begins to clump together. If needed, add one drop of water at a time to make the mixture clump.
  5. Press mixture into the K-Cups. Allow to dry for 24 hours.
  6. Remove bath bombs from the K-Cups by sliding a sharp knife into the small hole at the bottom of each cup. Slice a slit until the K-Cup can be pulled away from the bath bomb.
  7. To use bath bombs: Place in a hot bath and enjoy!


5 replies on “Relax & Recycle with K-Cup DIY Bath Bombs”

I’m curious about the essential oils. I’ve heard those things are pretty strong and expensive. Where did you get yours, and were they just the (lavender/peppermint/etc) oil or were they diluted with something?

Hi Kate,

Essential oils are pretty strong because they are concentrated, but using just a drop or two at a time is more than enough. Personally, I’ve purchased a small bottle of lavender essential oil and it lasted forever. I used just one tiny drop as a perfume on my wrists that lasted all day.

If you don’t know what kind of scent you want to start with, try a sample pack! Buy from Amazon:

Thanks for reading!
Jennifer, The Good Stuff

Thanks for the info! I found a nearby health foods store and grabbed some orange and vanilla.

So how much essential oil did you end up using? 2 tsp seemed like a lot, and then the OP recommended using just a few drops. So it’s not clear which advice to follow

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