Bathroom joule thief night light

This is a night light for when you stay in a hotel and you get up in the middle of the night and the bathroom is pitch black!
Turn on this light as you go to bed and place it in the bathroom, (adjust the brightness accordingly). Then when you visit the bathroom in the middle of the night, the light provides just enough light to see by, without the need to turn on the main light and blind yourself.
As this is a 'Joule Thief' circuit the LED will burn for a week straight, (with a new battery), s