Continuity mistake: When Pleakley is tipped out of the chest, he is accompanied by lots of Lilo's toys. When Stitch activates the pod, the toys have vanished from the floor around Lilo and Pleakley's feet.
Continuity mistake: The direction in which the lighthouse light rotates changes. When it first is powered up it rotates anti-clockwise. As the film's end credits start it is rotating clockwise (as viewed from above).