Glow in the dark shrooms!
Glow-in-the-dark mushroom rediscovered after 170 years | MNN - Mother Nature Network
Glow-in-the-dark mushroom rediscovered after 170 years | MNN - Mother Nature Network
Leading to great D&D game discussions such as the following:
Player: Hey DM, can I have a lantern powered by poop?
DM: Excuse me?
Player: You know so I can put luminescent fungi in it.
DM: *pause* *blink blink* *silence*
Player: So, can I?
DM: No...