Someone managed to recently find all the Korok seeds in the game and the game gives you this as a reward:
Hetsu's Gift which is a special item that literally looks like a golden piece of shit. Even implied to be one with the "its smells pretty bad" description for it.
http://kotaku.com/someone-has-found-...lda-1793276463
The gag gets even funnier when considering what those little Korok guys have been giving as gifts the whole time for finding them.