Continuity: The holes made in the laminated floor, by the candies, around the Christmas tree, are absent in the shot when the Penguins are giving high fives.
Continuity: A penguin uses binoculars rotated at a 90 degree angle, but the shot of the view through them is composed as if they were being used normally (horizontally level).
Continuity: When the penguins leave the elderly woman's house, the umbrellas in the umbrella stand, by the door, change positions between shots.
Continuity: The old lady wraps Private in red ribbon, and puts a sticker on his chest. However when Private flies out of the stocking, the sticker has vanished.