Very cute story - might have been inspired by the “Letters from Felix” books? The first one has exactly the same story.
Blockquote From publishersweekly.com: In one of the inaugural titles from the Abbeville Kids imprint, Sophie’s family is returning from vacation when her stuffed rabbit, Felix, disappears in a crowded airport. Readers will spot the lost toy on the luggage conveyor depicted in the first of Droop’s cheery, busy spreads. As the distressed child goes home, Felix embarks on a whirlwind international tour, communicating with Sophie via five letters (which can be removed from envelopes attached to the pages). After each epistle describes the rabbit’s sightseeing adventures in London, Paris, Rome, Cairo, Kenya and New York City, Langen fleshes out Felix’s travelogue with additional information about the locales. Though its format obviously recalls the Jolly Postman books, Langen’s wordy, occasionally awkward narrative lacks the ingenuity of those works. There are, however, several fetching extras: also tucked into the envelopes are a color snapshot of Felix in front of the Eiffel Tower and a ``secret pyramid map’’ from Egypt; and-when he finally arrives home on Christmas Eve-Felix carries a suitcase containing six travel decals. All ages. (Oct.)