I like to sleep in the dark, but I get up a couple of times in the night, and due to the high cost of electricity, I have put a motion sensor light onto the wall of my triple sliding door wardrobe.. I leave the end door open slightly, so if I sit up in bed the light comes on and shines into the room sufficiently well to guide me to the door, and in the hall I have yet another motion sensor light, and again in the bathroom... . I prefer to use those that take batteries because they last for months before needing changing or charging if using rechargeables, . USB ones are available and I have some of those, but they do need charging every couple of days, which is a bit of a nuisance