Flashlight Timer
HOMEChildren's flashlights often have timers to preserve battery life.
A nice design which even turns off if the pushbutton is held depressed or jammed a long time. Not re-triggerable while the light is still on though(Thanks for pointing that out Watson):
Below is one that starts off bright and slowly dims out to nothing. They could have eliminated the need for a power switch by putting a 2.2M ohm resistor across the capacitor:
Safety, accuracy and completeness of information provided herein is not guaranteed,
so be inspired by it but do not use it as a basis for experimentation or other actions.
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Version 20231217