Prompt: Design a captivating poster with high-resolution quality featuring a whimsical scene of stable diffusion. Imagine a surreal world where a giraffe is skillfully playing a contrabass inside a futuristic spaceship. Surround this unique musician with an ethereal glow to convey stable diffusion. Additionally, incorporate the symbol of unity and hope by including a Palestinian flag in the background. Ensure the poster reflects a harmonious blend of creativity, surrealism, and cultural inclusivity. The final output should be visually striking and suitable for high-quality printing.