We have one of those little plug in torches too, or similar anyway. When the power goes off they light themselves up so quite handy on landings for instance.
I also have two small sheets of glow in the dark plastic from an online shop selling tiny survivally things like compass, bobby pins, hidey hole buttons and the like but I can't remember what it was called.
Anyhow, if the lights are off I have tiny torch plus watch sitting on top of one of them by my bed so I can see where they're sitting, and the other on the corner of a cabinet I have to navigate round to get to/from bed. Not bright enough to disturb, recharge themselves in the daylight, if you put a torch on them they get much brighter if needed. I'd have got more, but maybe I'll chop these up to spread them around a bit to waymark stuff in a dark house.
The little black torch in the pic I got from Hennie about 15 years ago and runs on a 9V battery with a small dim led so lasts for flipping ages, no leakage. I've been thinking about getting some more little leds that clip to the top of a 9v rechargeable battery which would maybe work like a long lasting candle? (Blocklite?)
Should have added if not obvious, the green circle photo is the result of holding a maglite over part of the white/grey plastic sheet in the other pic for maybe 5 seconds. It is still glowing in that pic too but the flash hides it. Left to it's own devices, the whole sheet glows just not as violently.