Coffee Ground "Fossils"

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Coffee Ground "Fossils"
Ages school-age

Create your own fossils to display by using old coffee grounds. These work well as visual aids for science projects and makes a fun Earth Day craft for kids.

What you'll need

  • 1 cup of used coffee grounds
  • 1/2 cup of cold coffee
  • 1 cup of flour
  • 1/2 cup of salt
  • Wax paper
  • Mixing bowl
  • Some small objects to make impressions in the dough (Shaped cookie cutters work well.)
  • Empty can or a butter knife
  • Toothpicks, optional
  • String to hang your fossil, optional
Helpful Tip:

To reduce the drying time, bake the fosils for a short period of time to get the "dough" to harden.

How to make it

  1. Stir together the coffee grounds, cold coffee, flour, and salt until well mixed.

  2. Knead the dough together and then flatten it out onto the waxed paper.

  3. Use the can to cut out circles of the dough or use the dull knife to cut slabs large enough to fit your "fossil" objects.

  4. Press your objects firmly into the dough.

  5. When you take the object out, you have your "fossil". If you want to hang the fossil, poke holes into the edge to hold the string.

  6. Let the fossil dry overnight (and up to two days) and then hang it if you wish.

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