Create an easy Christmas coloring line-art illustration for young children featuring scene: Baking Christmas Cookies. Treat the scene description as a literal visual requirement. Every specific character, object, setting, or activity named in Baking Christmas Cookies must be clearly visible and easy to recognize. These scene-defining elements are the main focal points of the illustration and should be shown prominently. The stars of every scene are a small trio of adorable Christmas friends: a playful little penguin wearing a simple striped scarf, a friendly round-bodied reindeer with soft simple antlers and a small round nose, and a cute smiling snowman with stick arms and a tiny hat. Include at least two of these three friends in every scene, drawn large and expressive as the main characters, with clearly happy faces so every scene reads as warm and cozy. At most one classic Christmas character, such as Santa Claus, an elf, or a gingerbread person, may appear in a supporting role, kept smaller and secondary to the trio, or may be omitted entirely. Simple Christmas accents such as a moon, stars, large simple snowflakes, a fence, pine trees, a wreath, or a single small wrapped present may complete the scene, kept small and secondary. For the scene "Baking Christmas Cookies," show a big mixing bowl, a rolling pin, and a tray of large simple star and tree shaped cookies with the characters happily baking together. For the scene "Gingerbread House Decorating," show one large simple gingerbread house with big candy shapes on its roof and a character adding one more candy piece. For the scene "Mailing a Letter to Santa," show a large completely plain envelope being dropped by a character into a big rounded mailbox on a post in the snow. For the scene "Snowball Toss Game," show the characters playfully tossing large round snowballs in a gentle arc toward a small stacked snowball target, never at each other. For the scene "Making Snow Angels," show one character lying happily in the snow beside a clearly visible finished snow angel imprint shaped like a simple angel with wings, while the others clap. For the scene "Hanging Christmas Lights," show a string of large simple bulb lights being draped along a fence or a small pine tree by the characters working together. For the scene "Candy Cane Hunt," show several big candy canes standing upright in the snow and the characters gathering them into a basket. For the scene "Spotting Santa's Sleigh in the Sky," show the trio on the ground pointing up excitedly at a small simple sleigh with Santa flying high across the sky near a large moon. Keep the scene simple, spacious, and easy for young children to color, using only a few large, clearly separated elements, broad open coloring areas, generous white space, and minimal detail. Present the line artwork itself directly as the image: a flat, straight-on digital illustration filling the canvas, with the canvas edges themselves forming the outer limits of the artwork. Use only black outlines on a pure white background, and keep every enclosed shape completely unfilled with a bright white interior. Every visible element, including lights, windows, ornaments, presents, decorations, trees, wreaths, stockings, snowflakes, and hair, is rendered as crisp black outline line art with bright white interiors, so the entire illustration reads as a pure black-and-white line-art image. Create a true edge-to-edge composition: a few large scene elements may naturally continue beyond and be cropped by the four canvas edges, while the main characters and main activity remain clearly visible within the canvas, leaving the canvas edges visually open rather than enclosed. Keep all potentially writable surfaces plain and unmarked; communicate everything entirely through characters, objects, poses, and actions. The finished artwork contains only pictorial black linework and white coloring space.