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I made a quick night light using some things I found at home. It turned out rather beautiful. Here's a quick video:
Auto On/Off at night: I wanted to keep the components to the minimum, so didnt even bother with a RTC. Just turns on for 12 hours and stays off for the next 12 hours!
White plastic enclosure disperses the light from NeoPixels perfectly.
Slowly fading colors: Well if you're using NeoPixels, might as well make some animations.
Very little soldering required.
IKEA SOLVIDEN: Picked up these 12 casings for $1.99 at IKEA.
Digispark: A little over a dollar for a very convenient ATTiny85 board with integrates USB connector.
Phone Charger: You can use practically any phone charger you might find at home. I got some dirt cheap ones. All I wanted was something small with a USB port on it.
If I used an ESP8266 instead of the digispark, I could make it a lot more intelligent. First thing I'd do as turn it On/Off with sunset and sunrise using the NTPClient library. Only thing is, I haven't seen any ESP8266 board in this form factor yet. And using something like the NodeMCU would be too messy.
Could add a PIR motion sensor easily.