I happened across this book in the library today and oh my, it's super cute! I love when books can be adapted to different grade levels. I think younger kiddos would appreciate the humor but the point of view is great for older kids. I can just see them writing their own letter to Duncan as a crayon! And my two favorites from the story would be Beige Crayon (I laughed aloud at him asking "...let's be honest - when was the last time you saw a kid excited about coloring wheat?") and Blue Crayon - he's stubby from overuse and too short to see over the box :) There are so many directions you can go with this: letter writing, point of view, persuasive writing (why one color is better than another), and even adjectives. I found an activity last year where kiddos were given a non-traditional color and had to write a sentence using color adjectives to describe their picture.