Other mistake: When Tinker Bell constructs a boat with the playing cards paddle wheel, she uses a clip and a rope to make sure the paddle wheel doesn't start turning. However the rope would only work at stopping the rotation if the wheel turned backwards. Since it turns forward, the rope shouldn't be able to stop the rotation.
Continuity mistake: When Clank and Bobble enter Tinker Bell's workshop, she quickly tries to hide the broken pieces of the moonstone by brushing them into a small pouch. A few small pieces remain on the table. After Clank and Bobble leave, there are more pieces on the table and they are much larger.
Continuity mistake: Tinker Bell constructs a boat that has a paddle wheel made out of playing cards that are folded in the middle and attached to each other with paper clips. After she crashes the boat, the cards come loose and, as she falls, her head pierces one of the cards. The card no longer has a crease in it.