Potions:

Sea Water, Stardust and ironwood: Use on an adult for improved science skills.

Sea Water, Stardust and fish: Use on the ground for creating rain.

Sea Water, Stardust and Lodestone: Use on the ground for visits from the stars.

Sea Water, Stardust and Rock: Use on the ground to create a rock.

Sea Water, Stardust and Vegetables: Use on the ground to create mushrooms.

Sea Water, Stardust and Mushrooms: Use on an adult female and she will produce twins when next she has a child.