To make a river stone mat first you have to gather or purchase river stones. After that take a plastic mat and arrange all the stones on it. Then stick all the stones one by one to the plastic mat by using silicone sealer. Let the sealer dry completely.
What fun, sweet treat? Fill these waffle cones full of fresh fruit for a summer snack, or picnic dessert. Healthy bonus: they are full of anti-oxidants! (Use red and blue fruits, maybe mini marshallows too?