521. Helpful teenagers.
522. Pencil sharpeners.
523. The shared joy of a new and pristine notebook.
524. Friends who don't get cross when my sense of direction goes AWOL.
525. Christmas sparkly penguins in otherwise formal gardens.
526. The eternal optimism of ducks.
527. Soft, soft knitting wool.
528. The trust of a child.
529. Synchronised coughing.
530. Pink sky at night.