Create an eclectic collage that revolves around the number '1'. It can contain various elements like a singular tall pine tree standing alone on a hill, a single goldfish swimming in a round bowl, one open book on a wooden table or even one vibrant sunflower in a field. Furthermore, sprinkle the image with depictions of the numeral '1' in various fonts and sizes, possibly in places like corners or in the center. Retain a balance in the composition and experiment with different color palettes.