Cosmic Mummy: not a mummy but something forgotten on some planet
Cosmic Mummy Halloween Costume Tutorial: silver-gray fabric (satin / tulle / spray paint) about a dozen dollars for two yards, tear fabric strips instead of cutting for a frayed glow, metallic shine and space debris (silver beads / metal patches / CD pieces), loose and asymmetrical wrapping (leaving gaps and showing the face), gray-blue cool-toned makeup (no brown-yellow), space capsule accessories as a bonus (silver spray-painted old helmet / silver water bottle / sample bag)