Last evening wife and I went to a birtdhay celebration (80th) for a friend from college days. There was another couple there in which the wife cannot walk without a cane.
I gave all of them a small keychain light similar to this. http://www.ebay.com/itm/Plurple-LED-Key-Chain-Finger-Torch-Colorful-Flas...
I got a call today from the “birthday girl” that the wife of the other couple had gotten up in the middle of the night to go to the bathroom and the current went out. She was afraid to move in the dark. She called her husband and he remembered the lights I had given them. He found his pants and used the light to get his wife back safely in bed.
All this is to ask where I can get a night light that plugs in, charges, and does not light up until the current goes out. Appreciate any help.