Create a vibrant and playful illustration featuring a cartoonish "Boss Baby" character with big, super cute eyes and a small body. The baby should be depicted in a confident pose, wearing a tiny suit and a cheeky grin. Surround the character with an array of colorful toys, such as plush animals, building blocks, and a toy train, all rendered in bright, eye-catching colors like pink, yellow, and blue. The slogan "Boss Baby!" should be prominently displayed in a fun, bold font at the top of the design, using contrasting colors to ensure it stands out. The overall composition should evoke a sense of joy and playfulness, making it perfect for a toddler-themed project.