Pencil, 5½×3½ in. » ©2008 Sharon Rosa
In the future, extraterrestrial travelers will have taken the value of living space to a whole new level. To increase available room, limbs will be removed and replaced with holographic, force-field-enabled limbs which can be turned on and off at will. As an added bonus, nobody will ever be too tall or too short, as leg length can be automatically adjusted, and arms and legs can be quickly reprogrammed to adapt to any situation.