We use battery operated LED motion-sensing night lights mounted on the wall near the floor in various locations. When we swing our legs out of bed a light will go on. As we move through the 5fr other lights keep the path lit. Works well for us. We use white light and the people sleeping are not bothered by the light.
BTW-The blackout lights on our military vehicles (the cat eyes or whatever you care to call them) were all red and that did preserve our night vision while driving. Of course that was back in days of old. Now they probably just use night goggles.