Io9 covers the glorious Struwwelpeter.

From Io9:

Unlike, say, Aesop's Fables, in which chatty animals steer the reader toward the path of moral rectitude, Struwwelpeter is more interested in teaching children that A.) there are a litany of ways to die painfully; and B.) that their own stupidity and lack of 19th century Teutonic manners are almost always the cause.

Relatedly, I've just now realized that I need to replenish my supply of Struwwelpeter pendants in my Etsy shop.