Draw a large footprint in a big sponge using a permanent marker. Cut out the footprint. Pour washable Glow in the Dark Paint in an 1/8 inch aluminum pan. Press the sponge in the paint and sponge footsteps up your sidewalk to your front door for trick-or-treaters to follow, or around the side of your dark, spooky house. Flip the sponge upside down to stamp the other foot.