Dusk-to-Dawn LED Night Lights, 6-Pack
Plug one into every room you stumble through at night and forget about them — a light sensor switches them on at dusk and off at dawn. Six of them cost less than one designer lamp and use about 2 kWh a year.

If your kid is deep in a unicorn phase, this gives them a projector built around that theme instead of a generic starfield. It covers both a full starry sky projection and a plain night light mode, so it can flex from bedtime wind-down to just a soft glow left on till morning.
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Girls who love unicorns and want a projector plus night light in one
It runs on USB power or batteries, but not both together, and batteries are not included, so grab some before it becomes a bedtime scramble.
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