Night lights are kids’ favorite monster deterrent, but I know quite a few adults that like having them around as well. A good night light can keep you from stubbing your toe on the night stand without blinding you like a normal light would.
Even though they’re tiny, leaving a regular nigh light plugged in all the time isn’t really the most eco-friendly option. Why not whip up an awesome living night light like this one, and enjoy the calm luminescence of algae instead?
Hackaday contributor Caleb Kraft was always awed by his father’s stories of glowing water. His father, and ex-Navy man, had encountered bio-luminescent algae during his travels, and seen the way that it can light up an entire beach at night.
Kraft thought the algae’s soothing glow would make the perfect night light, so he set about hacking together a lamp that would agitate the algae just enough to produce the right effect.
“I really wanted to add more to this project though, so I decided to put the algae in a klein bottle and build a custom base for it that would allow me to move a BB around inside the bottle using magnets. This would in turn, hopefully, agitate the algae and make it light up,” writes Kraft.
“Ultimately, I have moved it to a larger container next to my side of the bed and added some other miscellaneous algae. I tap on it and the result is like a tiny fireworks show in front of my eyes. It is so bizarre and beautiful.”