Use the green marker to draw continents on the coffee filter. (They don’t have to look like the Earth’s actual continents.)
Fill in the rest of the coffee filter “Earth” using a blue marker.
Use a dropper to add water to the coffee filter. This will cause the colors to spread and blend together.
Place the coffee filter on a flat surface and allow it to fully dry.
Video
Notes
Helpful tips:
Protect your work surface: Prevent the marker ink from spreading everywhere by placing the coffee filter on a plate, by doing the craft inside a baking sheet or plastic tray, or by covering the table with parchment paper.
Choose the amount of water: Add more water to make the colors blend together more, or add less water to retain the shape of your continents.
Try using a spray bottle: If desired, use a spray bottle to wet the coffee filter instead of a dropper.