Blackout Buddy — Always-Ready, Water-Activated, Emergency Light

I could have used something like this so many times...

@jtriest Yes. To start using the Blackout Buddy H2O, you dip it into a small cup of water, or pour water into its battery compartment and it will keep going continuously for up to 72 hours – if it starts to dim within that time, you just have to add more water.