Unplggd has a flashlight roundup
– several are plugin-constant standby – one solar powered, one hand-cranked. All worth a look. However, I’m not giving away my Safe-Light anytime soon , and in fact have been considering purchasing them in bulk. Have done some stupid things – like drive long distances without a flashlight or jumper cables – but I change batteries about once a year.
They’ve got a number of variations on the same idea – if you’re going to carry one, though, I’d recommend The Safe-Light Super Bright With Coloured LED- in red – as the best way to see and
maintain your night vision in an emergency.