Sorvix life support unit
From Tardis Wiki, the free Doctor Who reference
To acclimatise to Earth, some Sorvix had to keep a life support unit with them at all times. It looked like a suitcase on wheels. Getting used to Earth apparently took some effort, as Brongwyn continued to use her unit because she could not be bothered putting any effort. When St John Colchester drilled into hers, she died. (AUDIO: Aliens & Sex & Chips & Gravy)
