Here is a Special Resource for Writers, with contributions from a number of writers! The Onomatopoeia Book is a helpful resource for finding just the right fun word for your writing. Check it out!
** Please note that the credit for the Devices Sounds section from my dear friend, Robyn Campbell, got left out of the Onomatopoeia Book's credits.
The Blabbermouth Blog
No Water River
Children's Book Insider
Flubs 2 Fixes
Jane Yolen's advice for writers
The Lyrical Language Lab
Making Picture Book Magic
Picture Book Academy
The Purple Crayon: Writing, Illustrating, and Publishing Children's Books by Harold Underdown
Sylvia Liu Land
Julie Hedlund's 12x12
Society of Children's Writers and Illustrators - SCBWI