Bring 3 cups of water to boil in a medium saucepan. Using a sharp pointed knife, poke a hole in the top of the egg at the narrow rounded end.
Empty out the raw egg inside and discard. Use your fingers to gently chip away at the opening until about 1/4 of the eggshell top is gone and the top edge is relatively smooth and even all around.
Using tongs, dip the egg in the boiled water to sterilize the inside.
Empty out water from inside egg and gently wipe outside dry with a paper towel.
Use food coloring pens (available at many craft stores) to draw a holiday image on the side of the egg.