Blues Clues Rare Stamp Book Stamp Book From Mailboxs Birthday Blue's Clues & You Stamp Set on Sale for JUST $5.50 (Was $18.29)! in Blues Clues Characters Magenta Blues Clues Notebook Collection Etsy. Big wooden handles for little hands help even the youngest stampers get creative! Mix and match stamps with characters and elements from Blues Clues & You! and color with crayons to create countless adventures. Kids three and older will love stamping, coloring, and telling stories with Blue and friends. Blues Clues & You! promotes kindergarten readiness, inspiring confidence, empowerment, and kindness in preschoolers as they develop their problem solving, social, and developmental skills through play.