Dress-up clothes, face paints/makeup, your imagination!
Tell your children that today is "monster day," and they get to be any kind of monsters they want. Have them go through the dress-up box, their drawers, or the rag pile and put together a monster outfit. Anything goes! Use Halloween makeup, eye shadow and lipstick, homemade face paint, or washable magic markers to draw on monster faces. Get their input. Do they want spots or stripes? What color? Do they want to be scary or funny? Fangs? Next, get a piece of colored construction paper to make their horns. A fun addition to any monster outfit is horns. To make horns for your child, draw a two large horns (two triangles or curved horns or rounded ears) with a one inch wide strip on either side of one of the horn ends. Cut an additional strip to staple or tape to the horn strip to make it the right length to fit around the head. Tape or staple all of the pieces together to make a crown. Let the kids roar, dance and terrorize the house or yard. If you're really daring, go on a monster walk. Be sure to bring extra horn crowns and face paint for friends you meet along the way. We ran into 4 different children who promptly joined our monster gang (with parental permission) as we went through our neighborhood! Don't forget to take pictures to commemorate the event! Finish the day off by reading a book like "Where the Wild Things Are."