Create a vibrant and playful logo where the letters "LZY" are transformed into a cheerful and happy face. The letter "L" curves into a wide smiling mouth, showing a joyful grin. "Z" is stylized as two squinting, playful eyes, with curved lines that express energy and happiness. The letter "Y" forms the nose, and the upper part extends as part of the face structure. Include small elements like stars, sparkles, or confetti around the face to enhance the fun and lively atmosphere. Use bright, cheerful colors such as lime green, sky blue, and sunny yellow to make the logo pop. The overall design should be round and friendly, appealing to both children and teenagers. The style should be cartoonish, energetic, and evoke feelings of joy and fun.