"Create a black-and-white line art illustration for a fairy tale-themed coloring book, designed for children aged 4 to 6. The scene should include a friendly, magical forest with large, simple trees, a small, enchanted castle in the background, and a cheerful fairy with rounded wings and a big smile. Add one or two cute woodland animals, such as a bunny or a squirrel, interacting playfully with the fairy. Keep the design simple, with bold, clean lines, larger open spaces, and minimal intricate details, making it easy and fun for young children to color. Include a few magical elements like stars or sparkles, but avoid cluttering the image."