Thing 1 wants the bedtime story. Thing 2 is kept awake by the light spilling into his room from Thing 1's light. Can't turn off the light in Thing 1's room, though. A flashlight means giving up the use of a hand, and those mini-gooseneck lamps that clip on to books tend to lose their "gooseneckiness" over time. But if you don't mind wearing a baseball cap for a few minutes before bedtime, the tiny clip-on lamps from Eveready you see at point-of-purchase displays work wonderfully.
Another option: the head-mounted flashlight. Did you know there is such a thing?