I remember as a child, my favourite book was "Grizzly Tales for Gruesome Kids". It has been published many times and illustrated over and over (I had the 1992 Puffin Published version).
I remember the story of The Spaghetti Man. Timothy didn't eat normal food and didn't help his mum, and she warned that The Spaghetti Man would come and take him, as well as all other disobedient children, and make them into different variations of pasta as a form of punishment.
I always remembered the description and the illustration that followed it, and it scared the crap out of me. I don't know what happened to my copy of the book, but decided to draw the Spaghetti man as I remembered him. Still scares the crap out of me!