Pi Day Tech Celebration

Create a black-and-white coloring page celebrating Pi Day (March 14). The design should include the mathematical symbol π prominently in the center, and surrounded by hi-tech element such as rockets, phone, AI, airplane, etc. Add fun elements such as a pie (as a playful pun on 'pi'),  and a festive banner with 'Happy Pi Day!' in bold, decorative lettering. Keep the linework clean and detailed, making it enjoyable to color for both kids and adults.