What are good alien-themed gifts for adults that are not childish?

When shopping for an alien-themed gift for an adult, the key is to avoid neon green plastics, cartoonish gray-alien faces, and cheap novelty toys. Instead, lean into more mature styles:

• Cosmic realism: a meteorite display piece or another well-made space-themed object.
• High-art or sci-fi design: items inspired by sleek retro-futurist aesthetics or classic sci-fi art.
• Subtle practical design: functional home goods, barware, or fashion items with minimalist planetary, celestial, or UFO motifs.