Designing outdoor furniture that generates miniature universes is a fusion of art, science, and imagination. Start by selecting materials that evoke a cosmic feel, such as translucent resins, metallic finishes, or embedded LED lights to mimic stars. Incorporate interactive elements like water features or kinetic components to create dynamic, ever-changing "universes" within the furniture.

Consider fractal patterns or galaxy-inspired textures to enhance the celestial theme. Use 3D printing or handcrafted techniques to add intricate details that resemble planets, nebulae, or cosmic dust. For functionality, ensure the furniture remains weather-resistant while maintaining its artistic integrity.

Finally, experiment with bioluminescent plants or solar-powered lighting to bring your miniature universes to life at night. This innovative approach transforms ordinary outdoor spaces into enchanting, otherworldly experiences.