Inside the envelope was the folded cardboard birthday card (front and back above, inside-surfaces below).
I constructed it at the next-to-the-last-minute for Mabel, dragging in the theme of THREE wherever possible.
She was a good deal more interested in the gift of stickers than in the adult-concept birthday card (where admittedly I got carried away with amusing myself). Mabel would of course have put these same collage elements together in a totally different way.