Koi pond
these can be built as a sexy little thing to go in a pilgrims yard. Doesn't really do anything except look awesome and attract the lady pilgrims.

UNTIL... you add a crimson carp, then it either gives a madness reduction, OR at the least, prevents madness gain while within X radius of the pond. Having a crimson carp in said pond could also give it a cool little animation, fish jumping around or some such. Perhaps throwing seeds in the pond could give a madness reduction, something.. something with a koi pond, because they are awesome and super sexy, and the ladies love them

UNTIL... you add a crimson carp, then it either gives a madness reduction, OR at the least, prevents madness gain while within X radius of the pond. Having a crimson carp in said pond could also give it a cool little animation, fish jumping around or some such. Perhaps throwing seeds in the pond could give a madness reduction, something.. something with a koi pond, because they are awesome and super sexy, and the ladies love them