I read somewhere that somebody in China in the last 100 years taught the case of a Master who was enlightened by the inn keeper's daughter singing this song as she made bean cakes:
Oh, Chang is the bean cake,
And Lee is also the bean cake.
At night when you lay your head down upon your pillow,
A thousand thoughts may arise in your mind;
But when you awake in the morning,
You still continue to make the bean cakes.
Making bean cakes is not a Zen teaching. I don't hear the Master complaining though.