Nightlight

Tom can't sleep without a nightlight.

She turned on the nightlight.

We bought you a nightlight so you wouldn't be afraid to sleep at night anymore.

She had brought in with her the night-light that had been burning outside her door. She blew it out.

They made you give up / your nightlight / and your teddy / and your thumb.

1988, Joseph Brodsky, "Gorbunov and Gorchakov" Canto 13 in In Urania, New York: Farrar, Straus and Giroux, p. 165, Your light cannot drive off the dark from me— / not any more than night-lights by the bed / drive off my dreams.

He put a small nightlight in the bathroom to find his way around in the dark.

The floor-cloth deadened his footsteps as he moved in that direction through the obscurity, which was broken only by the faintest reflected night-light from without.

[…] the man held up two small objects faintly twinkling in the nightlight;

Their made-up faces were garish in the night-light and as they walked they stared fixedly ahead, afraid to make a sideways glance in case it should be called soliciting.