Materials: 2 liter plastic bottle Scissors Duct tape Sand Sharpie Marker Ruler   Instructions: Empty and wash out the 2 liter bottle so it’s nice and clean. Take the scissors and cut off the spout top right where the taper or curve begins. Fill bottom of the bottle with 1/2 inch of sand. This will keep the bottle from falling … Continue reading Rain, Rain, Don’t Go Away Rain Gauge