Worms in my desk.

"Shedd Aquarium employee Cecelia Urgani tosses lunch leftovers into a bin full of earthworms under her desk. The worms produce castings -- that is, poop." Link

I don't think this would fly in my office. The conversation would go something like this, "Hey Bosslady! Can I put a compost bin under my desk?" "Gretchen, did I ever mention our drug testing policy..."