After the giant beach ball rolls behind a large bush and into the woods, when Jeannie runs behind the bush to retrieve the ball, she gets it from a location that is clearly different from where the ball actually rolled away to.
When Tony (dressed in a suit of armor) falls over the railing the helmet flies off and reveals the stunt actor in the armor. The next shot is a close up of him and his helmet is now back on.
When Tony writes out the list for Jeannie and rips the paper off the pad, he missed part of the top of the paper. When Jeannie pulls the paper out of her purse in the next scene, it isn't torn at the top.
The first time the police car is seen, passing Bancroft Jr. High School in Hollywood, there are two occupants. In the second shot, there is only one. When Jeannie walks past the two officers entering the bank, their car should be outside, but in the next shot, no police cars are seen outside the bank.