Continuity mistake: After knocking Ganondorf down the horse in the final battle in Hyrule Castle, his sword is still in his hand. However, when he talks to Link immediately afterwards, it's suddenly in the sheath and he pulls it out.
Continuity mistake: In the cutscene after you first meet Zelda, which is a flashback describing how all the people became spirits, Zelda drops her sword to the ground. However, in the next shot, she is holding it as the camera zooms out.