When George goes out to the van to wake Georgie in the morning, the level of orange juice in his glass changes. The glass is about 3/4 full after it was down to about 1/2 full.
Georgie could not have lawfully purchased and registered a vehicle in his own name until he was 18.
When Sheldon comes into the kitchen, the Bible he is reading has blank pages.
When Paige obtains the bookmark she won, she starts to turn to her right to return to her seat, but in the very next shot she is turning to her left.