When April sits in the car, the amount of popcorn in her bucket changes.
When April is walking around the abandoned snack bar in the cinema, the crew is reflected in the silver metal of the candy case, at the snack area.
Forearm splints visible under Jennifer's sleeves whenever she blocks the blows from wooden beams. Her sleeves also become rolled up at one point when she's posessed, then back down again later to hide the splints.