The Day the Crayons Made Friends by Drew Daywalt

Another book in the Crayon series by Drew Daywalt. Duncan’s crayons have disappeared again. This time the crayons have set out to make friends. White crayon no longer feels invisible since meeting the chess set and filling in as the missing queen. Blue crayon’s problem of being short is solved when they find a doll who’d lost a head and they team up. Each crayon’s story is told as a letter from that crayon.