Foliage that looks like a watermelon! It not hard to see why the Watermelon Peperomia (Peperomia argyreia) is one of the most popular plant varieties around.
Position in a warm room with bright natural light and water when the top few inches of soil has dried out. Be careful not to keep the soil too wet or soggy or the roots will rot. Avoid harsh direct sunlight or the foliage may burn.