What you need:
black permanent marker
ornament (matte finish works best)
brown and red acrylic paint
Paint child’s (or your own) thumb with the brown paint and place thumbprint on ornament. Allow paint to dry (about 15-20 mins) then using the permanent marker make the antlers and eyes, we used the tip of a paintbrush and the red paint for the nose, but I am sure it could be done with a marker as well.
Don’t forget to date it on the bottom so you will remember your child’s age when you did it!