CALMING RAIN BOTTLE! To make the rain bottle -fill a dry empty bottle with a box of toothpicks. Add rice (uncooked) to the bottle leaving an empty space of about 1 1/2 inches at the top. Seal the lid. As you gently turn the bottle, the rice falls through the toothpicks, sounding like rain. This is really calming because you need to tell your child to be very quiet and listen to the rain!