This crayon art birthday invitation looks like it was colored by a very happy toddler — which is exactly the point. A hand-drawn ambulance with a smiley face races across the top of the card while a green crayon-textured balloon floats beside it, and a big red outlined numeral announces the big three. The lettering is a thick monoline script that reads like a child's proudest handwriting, set on bright matte white paper so every crayon stroke pops. The palette stays in true primary territory: crayon red, electric blue and grass green, with a warm yellow for the little accents. It is made for a third birthday with an art-studio or playhouse theme, for a little one who loves ambulances, trucks or coloring, or for any party where the dress code is a smock and the guest of honor comes first. Sending this invitation includes RSVP tracking so hosts can gather replies in one place, a countdown to the celebration, directions to the venue, and room for hosts to add dress code, parking and a personal note. The matching envelope art and party extras carry the doodle theme from the mailbox to the goodie bags. Bright, cheerful and unmistakably handmade, it turns a birthday card into a little piece of art.