Prompt: Create an adorable set of flat illustrations, line art, and minimalistic designs in a whimsical hand-drawn style. Design a simple logo of a boy with a playful and crooked hand-drawn aesthetic, featuring a thick Klein Blue outline. Focus on a close-up of a child wearing a cap, expressed through a continuous single-line doodle, ensuring the lines are charmingly irregular. Emphasize a cute and endearing feel in the hand-drawn lines, keeping the design simple yet lively—a style that exudes expressiveness—s 180.