"Breakable" Christmas bulb removed from tree disappears from top of ladder, when the two characters are talking on the ground, next to the tree.
At the moment when Ryan who is handing out gifts, asks a little girl her name, Summer is looking at a costume she asks her sister for help getting in to. In the time that it takes for Ryan to turn, pick up a teddy bear, and give it to the same little girl, Summer is coming through the door completely dressed in the entire complex costume.
At about 20 minutes into the movie when Grandma is making a vegetable smoothie, she pours the last of the smoothie into a glass and hands it to Chloe. As she hands it to Chloe, the glass is about one quarter full, but when Chloe brings the glass to her lips it is now half full.
At approximately 56 minutes, Summer is looking at her mail. The first envelope is addressed and stamped but the others appear to be blank. The bottom two envelopes are unsealed. She "opens" the next to the last envelope, which is unsealed and appears to be blank, and removes and reads mail from a business.