The leftover, smallest pieces of a given item. Often referring to food, in particular, the extra crispy little bits of french fries found at the bottom of the container.
Audrey's favorite food experience is eating the crispy goodness of schnibblins found at the bottom of the container of fries.
The word "schnickelfritz" is a term of endearment of uncertain Germanic origin. It means something akin to 'rascal', 'scamp', or 'little chatterbox'. The word is usually used with children, but can also be used between others who are close with each other.
Also, Schnickel Fritz is a folklore character. Fritz was a rascally little boy. He also is mentioned in the Schnitzelbank song. (Google the song...I'm not chronicling it here.)
Johnny just played a trick on me and made me look silly; what a schnickelfritz!
To a child: Hurry and put your shoes on, Schnickelfritz!