There is a Hidden Mickey in the Pablo the Penguin sequence. It's towards the beginning when Sterling Holloway is saying "There is nothing the average penguin likes better than a day at the beach." Look in the bottom left corner of the screen; there is a bucket with Mickey, Pluto, and a portion of another character which I couldn't identify on it.
REPORTED: Joy Kovacs 27 JAN 97
During the Penguin scene where they introduce the activities, the kids are burying their father in the snow, the pail has full size Mickeys on it.
REPORTED: Thomas Deater Jr. 08 MAR 97