While the Nasheboo family is talking to Jim and Pete, Rosita's stuffed toy falls. However, Tom had grabbed the toy and dropped it on the ground.
At the end of the mugging scene, Malloy can be seen walking away from Santa and out of the scene supposedly to the police car. The reflection in the storefront window shows him joining the film crew and turning around to watch the rest of the scene.
Several "extras" are seen from one scene to the next: when the man who stole from Santa is arrested, there is a woman in the background with a thick white headband in her hair. There is also a woman with very short hair in the background as well. Both these women are also seen in the car accident scene in the next sequence.
It's never explained what the helicopter is doing. It has no lights. And in this era (the early 1970s), police helicopters were not yet outfitted with thermal cameras or any other form of night vision.